Templates for foam cutting - RC Groups
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Jul 28, 2013, 03:05 AM
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Jab69's Avatar
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Templates for foam cutting


Hi
What material do you guys use to make templates from.
Thanks
Jannie
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Jul 28, 2013, 03:50 AM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
I use doubled up poster board, thick art board. On thin parts I will spread a thin amount of superglue to stiffen up the board. I've used my cardboard/artboard templates multiple times and they hold up great.

Some guys are able to get scraps of formica from cabinetry shops. Others also use thin metal or wood.
Jul 28, 2013, 09:44 AM
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Jab69's Avatar
Hi
I also find using cardboard is far more handy and easier to use.Cheaper and when needed to redesign sections of the plan one just copies the existing template and draw the mod on the new copy and cut out.I also find that I can use that template 2-3 times with good results.
Jul 28, 2013, 11:09 AM
Don't cut the Yellow Wire
dr.E's Avatar
Go to your local pizza place and ask for some unfolded pizza boxes..... Make sure you order a pizza though and then get the freebie boxes.......
Jul 28, 2013, 11:39 AM
"Fly, yes... Land, No"
OutcastZeroOne's Avatar
the cardboard I use is not the curagated stuff. it is hard pressed, flat cardboard. The official name is Architectural Chip Board.

Jul 28, 2013, 02:03 PM
Registered User
For a lot of smaller parts I save and use old cereal boxes.
Jul 28, 2013, 03:35 PM
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Frank Rys's Avatar
Plain old paper..
Jul 28, 2013, 06:16 PM
Registered User
For something a bit more durable I use lite-ply with thin copper foil wrapped around the perimeter. You can get sticky backed thin copper foil from stained glass stores in 7/16 or so widths, works perfect for a template that you will want to use again becaise it prevents burn in from the hot wire. I haven't done it, but you could wrap the same foil around cardboard or poster board for something quicker, but I like the lite ply. The foil works really well, highly recommended.
Jul 28, 2013, 07:16 PM
Registered User
I pretty much always use 0.5mm aluminium sheet. Really easy to cut with just a pair of scissors and with a sanded edge smooth and durable to guide a wire. My current project though I bought some 1mm sheet that was just really cheap on ebay. Certainly durable but not quite as easy to work with!

Kev
Jul 29, 2013, 12:02 AM
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Jab69's Avatar
Hi Kev
How easy is it to cut the aluminium sheeting.Is it easy to cut small radiuses or do you need a small tin snips which has a radius on the cutting section?
Thanks
Jannie
Jul 29, 2013, 05:59 AM
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zetland76's Avatar
I bought some birch veneer from a woodwork supplier at a very reasonable price. I glue my printed template to it and cut them out with a Stanley knife. Sand the edges. Pin them to the foam with dressmakers pins, then hot-wire to cut the wing blanks.
I have tried most other materials, but the hot-wire seems more prone to snag.
Although the copper foil round the template edge also worked well for me.
Jul 29, 2013, 08:12 AM
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flypaper 2's Avatar
I use Formica for the templates. The edges need to be absolutely smooth to keep the wire from hanging up. If it stops at all it will leave a notch in the foam. I end up using 600 water paper for the finish. I tried metal templates but found the aluminum absorbed the heat from the wire and cooled it enough so that it would leave a rough finish at the template end of the foam.

Gord
Jul 29, 2013, 08:25 AM
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Jab69's Avatar
Hi
Why I use the cardboard is that it is easy enough to cut with a normal scissors.I've tried formica(the type which comes on kitchen tops) but it is so damn hard to cut. And when one wants to cut all those mods to suit your shape, cardboard is the easiest.
Jul 29, 2013, 02:12 PM
The Junk Man
Quote:
Originally Posted by flypaper 2
I use Formica for the templates. The edges need to be absolutely smooth to keep the wire from hanging up. If it stops at all it will leave a notch in the foam. I end up using 600 water paper for the finish. I tried metal templates but found the aluminum absorbed the heat from the wire and cooled it enough so that it would leave a rough finish at the template end of the foam.

Gord
Which is why I glue a cardboard "standoff" to the side against the foam. No problem.

Tom
Jul 29, 2013, 06:27 PM
Registered User
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Last edited by swede-rcgroups; Jul 29, 2013 at 06:33 PM.


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