Space Shuttle Launch Pad 39A with Challenger STS-6 (1:144)

• #100 by roma847 on 17 Jan, 2013 08:16
• It's time for the next update.
  
  And so back to continue the LOX-Transfer line on the left Equipment pallet on the Access platform AP 1, I had indeed already on a trial basis adapted to the length. As well as already declared and was to see, the color of the transfer line around the corner to the Side 1 changes from white to grey.
  
  This pipe segment has some details that you can see on my standard photo shown already several times by the left pallet.
  
  
  Source: Capcomespace.net
  
  There are three groups of three rings, two smaller cylinders (possibly filter), one is vertically standing (1) and the other horizontally to rear (2), and in the middle are a pipe coupling (3) with a delicate small valve on the top. And these things I've tried me first.
  
  
  
  The white rings left in the image are again from square profile (0,5x0,5 mm) bent. The right cylinder with the four rings of lead wire (Ø 0,3 mm) is this pipe coupling. For the valve attachment, I had originally intended the red part in, by the way comes from an interdental brush. But as you can see already, this part of the proportions is produced but much too big for the coupling when looking at this picture to do so (see lower left corner).
  
  
  Source: J. Patterson (NASASpaceFlight.com)
  
  That is why I have made the small valve attachment itself, the two lateral elements are made of round profile (Ø 1.0 mm), the upper small part is only about 1,0x1,0 mm, so it should probably be arrived on the border of what is possible in this scale. The left white part is one of the two small filters (Ø 2,0 mm).
  
  
  
  
  
  But somehow the proportions of the lateral elements on the valve attachment were always incorrect, which would have to be thin, which I then changed, left by a small nail (Ø 0.7 mm) and right by a pin (Ø 0.6 mm), which then looked better.
  
  
  
  
  
  And this is the fitting on the pallet with the customized segmented elbow pipe.
  
  
  
  Here are some pictures for the overall impression:
  
  
  
  This is not everything but still long, because this main pipe of the transfer line has still a parallel side extrusion,
  that branches off backwards, as you immediately can see on my 3rd image in front of the MLP wall.
  
  
  
  And this side extrusion has still some small details that also has to be scratch built next time.
  
  
• #101 by roma847 on 18 Jan, 2013 22:30
• First of all the small supporting side extrusion at the beginning of the transfer line from the next to last picture has to wait because it can only be welded after the final assembly of the first line segment on the left pallet. To do this it must be threaded namely from behind under the Vent line through. And therefore this must still wait a while.  
  
  My short break was necessary, because in the meantime, I had to brood over the LOX-Valve skid on the right pallet. Since I must convert unfortunately my first prototype something, after I have noticed some inconsistencies in recent photographs, regarding the wiring of the pipes, which is somewhat complicated. And also some supports shall be completed, I had been so still not recognized.
  
  That is a pretty difficult business with the transition from the left to the right pallet and then to the LH2-Valve skid on the medium access platform, because since the alignment as well as the height of the lines must be in agreement. And that's why you can build not so away if not everything in paroxysm will degenerate but should fit together. Therefore, it is also appropriate for the time being not to glue the individual line segments, in order to always again control and make any changes or corrections, what but rather keeps.  
  
  So, the LOX-Valve skid was rebuilt only again. It had to be laid initially somewhat lower, so that the transfer line has still some air. Then had to change some supports and some new were added, as shown in the next pictures.
  
  
  
  
  
  
  
  After a first fitting with the transfer line segment could be made.
  
  
  
  And it looks already quite passable. Nevertheless the segment cannot be glued yet, because I'm not yet done on the right pallet.
  
  
  
  At the end of the line to the elbow pipe it goes then up to the junction in the direction of the LOX-Filter.
  
  
  
  Up to this point also the Vent line must be extended to the right which branches off from the blind flange and runs directly over the Transfer line. And that was tried out then equal times,
  
  
  
  and also looks good.
  
  
  
  The line is still capped then at the place of the elbow pipe. And then it gets really cruel,   as shown in this picture.
  
  
  Source: J. Patterson (NASASpaceFlight)
  
  From left here comes the Transfer line (below) and above the Vent line. Right in the picture then the Vent line joins in the Transfer line and then's goes above and in the elbow pipe backwards to the MLP wall and from there right to the LOX-Filter. And in between there are some fittings, expansion joints and valves, etc. ...  
  
  That should be enough for today, because at this sight already I'm worried to death and singing with the BEATLES: HELP, I NEED SOMEBODY ...
  
  
• #102 by roma847 on 19 Jan, 2013 23:04
• And after the frightening sight of the small pipes and valves in the last pic I think to myself, don't worry be happy seems to be the better way out. 
  
  Therefore it preceded a bit again on the right pallet, which further overhauled and completed, which should be so easy to see.
  
  
  
  
  
  Thus, the right pallet is now complete. The ring of LOX-Filter of that is caused by back and was already a bit too thick, was renewed by one made of 0.3 mm lead wire. Then, the complete pallet together with three lines was painted for the further pipe laying on the pallet and additionally requires the diameters 1.6 mm, 1.2 mm and 0.7 mm.
  
  
  
  
  
  Now the pallet definitively can be attached on the platform and begun with the laying of the cute branches.
  Above of Transfer line's butt follows the segmented transition to connect the Vent line and then the branch before the MLP wall and then right to the LOX-Filter.
  
  
  
  
  
  
  
  Right next to the LOX-filter three pipes with different diameters run then directly from the MLP wall on the Access platform AP 3 (behind the LH2-Valve skid) to Bay 13, from where they then run upward into the LOX-Tunnel, which leads to the right TSM, as shown here in the next pic.
  
  
  Source: NASA
  
  Don't bother you that the LOX-Filter on the pic looks differently than mine, but this is a photo of the MLP-3, where this other type of filter was used.
  
  
• #103 by roma847 on 20 Jan, 2013 23:08
• After the overhaul of LOX-Valve skid was finally completed, I've can stick finally there on the access platform. Thus, it could now further go with the continuation of the transfer line with the segmented elbow pipe behind the stub. And because the branch of pipes is quite expensive and requires various items it took longer this time.
  
  Since the production of small elbow pipe is something difficult, I've glued first always longer parts and cut them after the bonding of adhesive. And if you have bad luck, the stubs can cancel again, and then everything is starting again ...
  
  
  
  Here you can see some of these parts needed for the further construction of the lines. Left of the cent coin is the Transfer line sent with the finished elbow pipe, which left leads up to the end of the line next to the LOX-Filter, in between the junction of the Vent line is located. In the gap between the parts, the LOX-Filter sits then. Right is the continuation of transfer line, which then leads to the LOX-Tunnel,
  
  
  
  again with two segmented elbow pipes. 
  
  
  
  The prepared pipe segments with some small details are now.
  
  
  
  Originally I wanted to build the lines on the platform piece by piece from the front to the MLP wall, but that would be probably become quite complicated so I had to change this arrangements. I think that it is more appropriate to move the transfer line in front of the MLP wall to the LOX tunnel and then being able to align all other lines.
  
  And so the LOX tunnel had to be taken closer under the magnifying glass, on the last photo of previous post one can detect it just yet so under the blast shields. A special locking mechanism is located above the tunnel with two Pipe guides, which fix the two thicker horizontal lines upwards.
  
  And so roughly, the part should look in principle:
  
  
  
  To adjust the direction and to the fitting of the device the MLP were placed on the back wall.
  
  
  
  In between something was painted then also once again.
  
  
  
  To hold of the pipes on the MLP wall, there are a whole series of similar pipe guides, now displaced. They partly sit on horizontal reinforcement struts, which were installed in addition, since they are absent in the paper kit.
  
  
  
  Next, the segment left of the LOX filter and the line leading to the LOX tunnel could be glued now, and Thank God both parts sit very well.
  
  
  
  So long.
  
  
• #104 by roma847 on 22 Jan, 2013 07:32
• And here some photos for continuation.
  
  
  
  
  
  And now, the initial segment of the transfer line to the left corner of the Side 1 could be mounted finally also.
  
  
  
  And now also the corner connection of the transfer line is finally fixed and stable!
  
  
  
  Wow, that was a quite piece of work as a whole, and I am happy that everything worked very well so far.
  
  
• #105 by roma847 on 23 Jan, 2013 12:29
• And amidst the joy of my beautiful work, I received a message from DaveS with a bad news that has shocked me pretty.    He pointed me out, that the LOX/LH2 pipes at the STS-6 mission looked metallic shiny and were not painted white and grey. And that's right, as you can also clearly see that on this photo.
  
  
  Source: www.retrospaceimages.com (STS-6)
  
  While the fuel pipes of three MLP's starting around the mid-90's were painted in the well-known colours - Vent lines grey, Transfer lines white - the pipes at the beginning of the shuttle missions were apparently metallic shiny and looked almost the same. 
  
  Now I have to decide, what I'm doing with my pipes, very difficult. And so I'm now real considering whether I again around to paint the pipes?
  
  That would be certainly not impossible, but somewhat more difficult, completely apart from the effort. I am but not sure whether I would get the pipes with the brush so clean after painted, or whether I would ruin more me thus.    
  
  As test I have here brushed on-the-fly two metallic shades to sample on a white and gray line, which is right the Silver metallic from Revell Aqua color (36/90), and left about the Aluminum metallic (36/99), which differ but not much.
  
  
  
  It might also be a compromise, so to let the grey Vent lines and "Silver" only the white Transfer lines, as here you can see a sample.
  
  
  
  Now I wonder what comments you probably.
  
  
• #106 by OV135 on 23 Jan, 2013 13:01
• You can fix that. Get some Q tips or toothpicks for tiny spots the brush can't reach.
  
  
• #107 by roma847 on 23 Jan, 2013 17:54
• The white Transfer lines I'm going on every case silver coloring, because white painted pipes there were not at that time at STS-6 apparently really, so much is sure.  
  
  Then I'll see what it looks like together with the grey pipes.
  
  
• #108 by roma847 on 24 Jan, 2013 07:30
• Hello Guys,
  
  fresh dared is half won, here is my first painting of the Transfer line on the Side 2 with the silver color, which is quite okay for the first time, I would say. 
  
  
  
  
  
  I had to hurry up with the smooth painting between the pipe supports, but it was actually quite good, better than I first thought. I'll rework then still the places with a second coat of paint, where it has not immediately fully covered.   
  
  Once arrived at the corner to the Side 1 I did next then equal up to the LOX-Tunnel.
  
  
  
  
  
  I am all in all so far pleased with the result, the silver looks quite good and highlights even more the details. That is why I am still considering, whether I even silver the Vent line too.
  
  What do you mean? 
  
  
• #109 by OV135 on 24 Jan, 2013 13:56
• Hmm, this gave me an idea. Making black and white copies of the parts of the paper model at Kinkos. Use the copies to get the size of the pipes right ,the smaller ones. It helps also when looking for the structural columns covering the sides of the MLP.
• #110 by roma847 on 24 Jan, 2013 16:02
• So, and here is now the silver painted Transfer line of the Side 4
  
  
  
  
  
  I think I'll paint the Vent lines probably also still silver, then this gives a more actual overall picture.
  
  
• #111 by roma847 on 25 Jan, 2013 07:08
• In addition to the pipes to painting continued with the second, thinner pipe from the LOX-Valve skid to the LOX tunnel. I had bent it of 1.0 mm round profile and placed several bellows, which are wrapped in coils of 0.3 mm lead wire.
  
  
  
  The longer right part of the pipe runs directly in front of the MLP wall and then top enters the LOX tunnel. The left part runs obliquely forward on the valve skid and then meets the branch of the vent line, located here underneath.
  
  Because the upper pipe must be threaded under the transfer line elbow pipe, which leads in the LOX filter, I have separated the line in the middle at the local pipe guide, otherwise pipe laying would become too complicated, especially since on the left-hand side after the double elbow pipe anyway a few small details to install. 
  
  Again to clarify that what's now is about:
  
  The branch of the vent line shown above is the middle piece of line running from 1 to 2. And on this line this nice small armature sits, that could be possibly a type of flow meter or controller, that I tried to scratch-build.
  
  
  Source: J. Patterson (NASASpaceFlight )
  
  But see better the next photos, without much words:
  
  
  
  
  
  And so the part looks now with me after the assembly, almost adventurous, or?
  
  
  
  And here finally silver painted:
  
  
  
  So, and as a conclusion for today here is the right section of the initially shown thinner pipe, which leads to the LOX tunnel, after painting and assembly:
  
  
  
  So, that was something out of the often strained rubric: Many a mickle makes a muckle ...
  
  I hope you understand the German byword.
  
  
• #112 by OV135 on 25 Jan, 2013 16:02
• Here is a nice reference for you. http://troymcclellanphotos.smugmug.com/SpaceShuttle/Launch-Pad-39A-Reference/27615503_njrpH5#!i=2325568951&k=tm82qKB
• #113 by roma847 on 25 Jan, 2013 18:43
• Thanks for the link,  I know Troy McLelland's great Shuttle and Pad Galleries, really amazing photos. 
  
  
• #114 by roma847 on 26 Jan, 2013 06:59
• Initially, here is a supplement of the silver painting of the pipes with some images of the three sides of the MLP.
  
  Now I have painted the originally white Transfer lines with Revell-silver. The Vent lines I wanted to vary something color and mixed to therefore a few drops of Revell-grey and Revell-iron into Revell-silver. The shade of color differs only marginally from the pure silver, what I have now so left.
  
  Here is the Side 1, in which the upper vent line has received now the junction just before the blind flange, which then flows into the transfer line:
  
  
  
  And here is Side 2,
  
  
  
  and here Side 4:
  
  
  
  So far, so good, but what part of it else to the fuel pipes, to fuel the stack correctly, and above all safely?
  
  Clearly, of course, Valves and Sensors, and some of which I at least wanted to indicate. Granted, for a long time I was considering whether I myself should dare approach also on these details, and even longer about repercussions, how I could scratch-build it. 
  
  Here is the following, already known image of the Side 1, on which I have marked some of these details:
  
  
  Source: http://www.capcomespace.net
  
  There are for example four Relief valves, of which three (green arrows 1, 2, 3) are visible. The fourth, sits left next to the transition to the LOX-filter. Valve No. 4 is a Control valve with a small hand wheel. No. 5 and 6 are Temperature and Pressure sensors, which occur even in some other places of the valve skids.
  
  Looking for appropriate solutions for the construction of these fittings I have found something in the store for ship modeling, there are namely small rail supports made of brass, which I can use very well for these valves, as can be seen in the next picture.
  
  
  
  And a finished valve of No. 2 looks like this,
  
  
  
  and here to the fitting on the left equipment pallet at the MLP:
  
  
  
  On the next image, the beginning of the valve No. 1 is right to see,
  
  
  
  and so it went on ...
  
  
  
  To the left that should become the control valve with the small hand wheel No. 4, and here is the result:
  
  
  
  So enough for today, tomorrow is still a day.
  
  
• #115 by roma847 on 27 Jan, 2013 06:28
• Hi all together,
  
  I was just again looking the last orders in the paint shop, and the guys did in fact busily, and now the next pipes and armatures are also done.
  
  
  
  Unfortunately I must paint everything individually and outside of MLP that, and thats always something awkward and also quite stressful, but unfortunately no change can be.   But now I can finally also building everything, therefore let's see action.
  
  Since it is now but quickly cluttered with every other line on the LOX valve skid, I have here two images for a better overview, to better track the line run and assembly order, if someone wants to recreate it.
  
  I had installed the right half of the thinner pipe running above the LOX-Fill/Drain Line, coming already from the LOX tunnel. Now comes the continuation of this line, which runs via the LOX valve skid across. This is the green marked line, running at the LOX filter past,
  
  
  Source: NASA
  
  and finally diagonally enters in the branch of the Vent line.
  
  
  Source: J. Patterson (NASASpaceFlight)
  
  The difficulty this work is on the one hand, to ensure the fit of each section or to dominate the customize. Here on the original photos all look still pretty handy, but it is in the 1:160-reality unfortunately no longer. And on the other hand the place on the skid becomes closer with every other part and work this is always trickier. And with the thinner pipes are inevitably the fittings, valves and expansion joints etc., always filigree ...  
  
  In addition to this "green" thinner pipe, there is yet a further, even thinner, red marked pipe on which I ever point to, because that will be still attached. The blue arrows indicate additional fittings/valves.
  
  But first, here is a picture of the extension of the "green" pipe.
  
  
  
  In front of the lower part of this extension, now a by-pass line was assembled, which is difficult to see in the first photo since it is unfortunately obscured by the "red" pipe. But in the HiRes resolution of the panorama pic (click) can be seen at exact look, provided, you know it. 
  
  
  
  
  
  As shown on the pictures, here now even some of the small relief valves and control valves are mounted.
  
  A more by-pass line is there on the Transfer line of the left equipment pallet, which I had prepared some time ago, but for place reasons still not could install.
  
  
  
  This by-pass line could now, under the vent line through, connected with the transfer line, what turned out as extremely difficult, because there almost is no more space for fiddling.
  
  
  
  And here are some more pictures which show that the place on the LOX-valve skid is now running out.
  
  
  
  However, on the Access platform AP 3 is still plenty of place for the LH2-Valve skid.
  
  
  
  Tomorrow, then still the thin "red" line will be installed from the LOX tunnel to the LOX-valve skid, and even this line has a few valves ...  and then I can complain to the LH2-valve skid.
  
  
• #116 by roma847 on 28 Jan, 2013 22:07
• Finally, now is the thinnest and thus last of three pipes (0.5 mm brass-wire) on the line, and this pipe is not silver shiny, but grey. Since the pipe next to the LOX-Filter runs under the thick LOX-fill/drain line through, I had to subdivide it again into two parts.
  
  
  
  Here I tried the tiny temperature and pressure sensors that are made of 0.3 mm steel wire, in a 0.7 mm brass tube.
  
  
  
  Then the two parts of the line were installed one at a time, their junction is on the first pipe guide before the elbow pipe down.
  
  
  
  
  
  And also this line has two valves, located here in the front between the two pipe supports.
  
  
  
  On the next two pics, the sensors are quite clearly visible right next to the LOX-Filter.
  
  
  
  
  
  
  
  Thank God, thus the LOX-Valve skid is finally complete now, and therefore I will approve today evening once a beer (or two) me. 
  And tomorrow I'll go to the LH2-Valve skid on the right Access platform, what is at least as equally stressful ...  
  
  
• #117 by roma847 on 29 Jan, 2013 21:03
• After the LOX-Valve Skid is finally finished, a look back at the paper kit variant I jokingly built approximately half a year ago at this point once again. 
  
  
  
  When I look again that, I must say that the effort definitely has paid off. I am at least happy that I so got out that, what I previously not guaranteed I would be dreaming.  
  
  David Maier is kept benefit, that these details cannot be built of paper even at this scale, but as much only with shadowy textures, if also rather sent, can be interpreted. And seen from afar, the strikes also do not so much.
  
  And thus I would like to complain now to the LH2-Valve Skid on the Access Platform AP3, which represents a similar if not greater challenge.  
  
  Here advance a few photos that will demonstrate what it is now. First, there is the already well-known NASA panoramic photo to click in. This is the penultimate Antlantis mission STS-132 , but shows a MLP-2, which I build. And the technical equipment of the three MLP's was but almost the same except on detail differences. Since you can scroll nicely left and right and get good insight into the structure of the valve skid with various armatures and fittings.
  
  
  Source: NASA
  
  I am also in the fortunate position to have got some nice detailed close-up shots from a guy directly from the pad, which show some of the details still accurate here even from left,
  
  
  Source: J. Patterson (NASASpaceFlight)
  
  and here from right:
  
  
  Source: J. Patterson (NASASpaceFlight)
  
  To do this it should be noted that these photos of the last mission of Atlantis STS-135 come, was at the MLP-3 in use. And since as said, there are already small detail differences from the MLP-2, which are but not so serious, so that you can be inspired scratching well then.
  
  And here are the paper kit templates for the LH2 skid again AP3 A-H , which I do not want to deprive you, although I will not use it, like already in the LOX valve skid.
  
  
  
  And the construction of the skid should be thus:
  
  
  
  
  
  This looks everything on the installation sketches again quite straightforward and easy, but it is terrible matter,   I really would not like to give me.
  
  Therefore again on plastic profiles back used, of which one but needs a whole lot of different diameters, and this ranges from approx. 0.8 mm to 3.5 mm.
  
  
  
  The construction of the skid starts again on a pallet for which I've used 1.2 mmx0,75 mm U-profile.
  
  
  
  And so looks the pallet that is already on its way to the paint shop.
  
  
  
  From tomorrow to proceed then with the pipes and supports, etc., what I already own wonder...
  
  
• #118 by roma847 on 31 Jan, 2013 06:52
• So quickly it is not continued yet.  
  
  As already in the LOX-Valve skid, so all beginnings are difficult also on the LH2-Valve skid. Before it can really start with the scratching, first of all again the determination of the dimensions of the pipe segments and fittings is the most work, and that is a pretty frustrating business until it is done completely. And that takes everything so much time and keeps on getting far too long ... 
  
  This initially even an error was undermined me, because I had made the conversion and scaling of the dimensions from the photos of a wrong reference. It was in this case the diameter of the vent line with 2.5 mm. But the line reduces before the second pipe support already to 2.0 mm, what I initially not had considered, until I noticed it then.  
  
  And I have now extended this vent line behind the corner until the end of valve skid. Up there it reduces twice further to 1.4 mm or 0.8 mm at the end.
  
  
  
  The first fitting of the extended line fits so far already quite good, including three pipe guides carry that line. In front to that, the skid pallet will be then. And these two things were then brought in the paint shop.
  
  
  
  The pallet is closed to bottom out by a metal shelf.
  
  
  
  And here is the rear pipe guide to see under the penultimate rejuvenation comes, must be painted only still grey.
  
  
  
  Somehow, the silver painting of the line this time looks not so great, but kinda spotty.   Something seems not to agree with the airbrush, or color, because I need to paint well or badly once more.
  
  Because an expension joint is located on the rear end of the vent line, the line was capped with the first pipe guide left from the LOX-Tunnel.
  
  
  
  The small pipe guide at the end of the pipe is already mounted. Then I tried out my new color decals for the yellow markings of the vent line and cut a corresponding decal strip. The MLP-2 at the STS-6 had several of these markings, including even on the Sides 2 and 4. But I had to use a decal softener, in order to put the somewhat bulky decal nice around the pipe.     
  
  Now, the line could be mounted permanently, and then the two pipe guides before the expansion joint and a flange cover behind it.
  
  
  
  And that is likely to be the final place for the pallet here.
  
  
  
  Now it continues with the Transfer line. It branches at the beginning of the access platform obliquely forward off, and shortly afterwards the same again and then again parallel runs to the vent line. At these branching points strong support devices are located, which now were built.
  
  I started initially with the guide for the second branch of the pipe, because according to his level, establishing the skid pipes focuses on the pallet, and this must everything aligned and fit together.
  
  Here the prepared pipe guide made from 2.5 mm H-beam is provisionally set up for position and height test,
  
  
  
  and here the pipe segment after the branch is set up to the fitting.
  
  
  
  Because the first branch is relatively far from the MLP wall, the pipe is supported there by a robust pipe anchor, which sits directly on the reinforcement brace of the wall and is shown in the next picture. I have also used H-beam 2.5 mm.
  
  
  
  With this segment, it continues then next time.
  
  These are only small steps, but also getting to the destination. The matter is simply too complex or to filigree how to take it ...
  
  
• #119 by roma847 on 01 Feb, 2013 06:28
• The measurement and scaling holds but longer me on, than I thought, but this was with the LOX valve skid I think similarly. However it returned a few small steps forward on the rocky road ...
  
  Here, the pipe anchor for the first branch of the transfer line is now on the reinforcing bracer on the wall.
  
  
  
  And exactly at this point the prepared transfer line for the branch was separated now slanted forward mitred.
  
  
  
  Now I have mounted the skid pallet and the pipe guide for the 2nd branch and the branch piece associated with the transfer line. Because it is easier for the fittings, if that can be done directly on the separate line is connected but still not with the pipe on the corner. Furthermore, as more details are how the two rings and the small cylinder better to attach. And the paint must anyway still are. 
  
  
  
  
  
  Behind the 2nd branch the extension of middle pipe follows that but again ends behind the sleeve I've wrapped in aluminium foil, because there follows a T-piece (1.8 mm).
  
  
  
  
  
  From this, the two lateral line strands go off then run again before the LH2 filter in the middle strand, which is again seen in the original.
  
  
  Source: NASA
  
  The difficult is that these three strands from each other have very small distances (approx. 1 to 2 mm), which rather complicates the cutting of the segmented elbow-pipes and the assembly.
  
  In the next picture, you can see the T-piece behind it comes only with a pipe diameter of 1.6 mm next.
  
  
  
  Left of the middle part of the segmented elbow-pipe follows now actually, which measures only 1.6 mm, which can be kept hardly with tweezers.
  
  
  
  Maybe I must omit this small pieces but also, and instead apply the sheet with a 45° miter.
  
  But we see that then tomorrow.