Vacuform kits

Rick:

Try here:

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there is something else about vacuform kits most folks don't think about. let say you have a basic simple shape and you want to make a casting of this. you usually would buy the expensive rubber to cast the shape. if the shape is simple, vacuform it. then use the vacuform as the mold to hold the resin. some vacuform kits can be converted to resin with surprising results.

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I've been trying on and off for years but I finally got one the other year when i picked up a Dubena Yak-17 cheap. I guess one could say I cheated because I used several pieces from an extra PM Yak-15. I'm doing something similar with a Formaplane FH-1 by using parts of an Airfix F2H-2. The first 'pure' vac kit I've gotten decently far on is the Wings-72 Ro-57. It has gotten to the painting stage and I'm looking for some props for it. It's quite the cutie and not very large for a twin-engined fighter. Oddly I bought it second-hand and the previous owner had cut out all the parts. It then was a short sanding job and some scouting through the spares box for some interior details for the major assembly to start.

Bill Banaszak, MFE

i have only done a couple vacs. someone told me, a long time ago, that as a first step, i should paint the entire kit in a primer gray. this helped enormously in cutting out indivual parts. i completed a B-57F in 1/72 by carefully wet-sanding those wings using masking tape on my fingers and a sidewalk! so much for sanding blocks. not a contest winner, but it looks good on my shelf.

jack wrote: : there is something else about vacuform kits most folks don't think about. : let say you have a basic simple shape and you want to make a casting of : this. you usually would buy the expensive rubber to cast the shape. if the : shape is simple, vacuform it. then use the vacuform as the mold to hold the : resin. some vacuform kits can be converted to resin with surprising results.

I haven't yet experimented with resin casting, but doesn't the resin get hot while it's curing? Just wondering whether this would risk distorting (or destroying....) the vac in the process?

yes the resin gets hot, depending on the size of the piece. if you can wrap your head around a scifi show i can explain. take the enterprise c or excelcisor. i took .040 and did a vacuform around the top saucer, but i did not heat the plastic enough to get a snug fit, just a outline. i then took .020 heated fully, and vacuformed the top section so as much detail would come out. i placed the thin, completed .020 inside the thicker piece. i sprayed mold release, and poured. the saucer is about 6" in diameter. it save a lot on cost. i only had to use rubber for the detail of the command area, the impulse, section and so forth, for which i simply made small dams to hold the rubber. for smaller pieces such as a wing on a 1/48 scale aircraft, you can, if concerned about warping, put the vacuform in the freezer for a few minutes before pouring. this, however is not really neccesary. the amount of heat for such a small pice is insignificant. just make sure you use mold release before pouring.

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Strange! I use Netscape 4.7 and I have never had any trouble using Aero-Club's website, as the stack of Aero-Club kits in the celler will attest to.

Bill Shuey

R>

I have just downloaded and printed pages 1 - 9 Vacform modelling from aeroclub. This is ecaxtly what I was looking for. Thanks again. Ingo

I used the Airfix Hs 129 props.

It's quite the cutie and not very large for a

This was my second vacuform model; I still hadn't got the nerve to do it gear down. Lots of spares: cylinder banks from Hasegawa Zeros, exhaust stacks from Monogram P-36 kits. The seams were pretty bad, and I laid the decals right over flat paint, but my major mid-wing surgery to correct asymmetric dihedral worked like a charm.

Mark Schynert

Heh. I pointed out this very possibility to the webmaster and got a very snide response for my trouble. I still wonder if Aeroclub is aware of his attitude.......

No doubt. The webmaster, however, haughtily informed me that I was using an inferior browser when I pointed that out to him.

CSS issues aside, the main culprit is Apache qualifying HTTP responses as "text/plain". Any browser paying attention to content type is therefore obliged to treat HTML it's receiving as text, and display accordingly. IE OTOH attempts to render the contents regardless of what HTTP indicates, and displays the page as intended.

I explained the issue to the guy given as technical contact.

Chris