covering a sig something extra - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-25-2004, 07:09 PM   #1
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covering a sig something extra

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I just received a something extra kit for Christmass . After reading through the instructions, which by the way appear to be very clear (of course I haven't started the assembly yet). The one thing that made me think though was that they say to completely build the tail feathers and then cover. I have always had trouble trying to get a good looking seam at a square corner (90 degree). Has any one had experience with this that they could share. Would it be better to cover and then assemble?
If you do cover after the stabilizer and fin are together how do you manage to get a nice looking seam?
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Old 12-25-2004, 07:34 PM   #2
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I've built several kits that were covered after the tail had been fully assembled. Here's how I do it.

For the first surface, I butt the covering up snug to the surface that is 90 degrees to the surface that I'm covering. Get it well ironed on. Then, for the surface that is 90 degrees to the surface I just covered, I place the covering on so that it will overlap the already covered surface for about 1/8". I iron that on starting about two or three inches from the corner and work my way into the corner. To finish off the corner, I use a trim iron to carefully work the covering into the corner and then onto the overlapped bit. The trick is not to allow the bit of covering that overlaps to adhere until the rest of the covering has been well worked into the corner.

I do the surfaces in this order:
  • Horizontal stab bottom
    Vertical stab left and right
    Horizontal stab top

This method works for me, but is by no means the only method. Hopefully someone else will explain their method and give you a choice.

I might also suggest that you glue a couple of pieces of scrap together and practice first.

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Old 12-25-2004, 08:10 PM   #3
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I agree with you, I like to cover the tailfeathers before I install. I've also covered the tailfeathers after installation, both using the method Jim mentioned and another with a slight variation.

Iron on a small piece only in the corner with about 1/8" overlap on each surface BEFORE you cover the main areas. Then just butt-up the covering to the corner you've already covered and iron down normally. Don't make the corner piece too large or it'll be harder to apply and you'll get bubbles when you cover over it.

Hope that makes sense.

Both have worked for me, but I'm no pro.

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Old 12-25-2004, 09:56 PM   #4
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EXACT same question so enjoy.
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Old 12-26-2004, 02:39 PM   #5
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Thanks for the input. I think I will try assembling then covering, after practicing the technique suggested.
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Old 01-25-2005, 11:23 PM   #6
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I cut a strip of covering about 3/8" wide. I lay that into the corner. 1/2 of it on the horizontal stab, 1/2 of it to the vert stab or fuse. Then go ahead and cover your tail feathers, over lapping onto the strip that is already ironed into the corner. It works very well for me.

The only part I seem to struggle with is the joint of the LE of the horizontal stab and the fuselage. For that I cut diamond shaped peice of covering and iron into the corner, overlapping over the 3/8" strip, and prior to the main covering. Even then, I seem to always end up with a pinhole at this location.

If you like building and are not getting out of the hobby anytime soon, the 50 page booklet "Tom's Techniques" is an excellent reference. I have it and highly recommend adding it to the edge of your workbench.
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