making clear plastic

Modeling Subjects Aircraft
1

Hi everyone.

In my model,the nav lights are covered by a clear plastic.But the model part is not so transparent as it is very thick.so I made my own part by warming up a piece of plastic,inserting the actual part in the heated plastic and the plastic will form up.The problem is that with this technique,the plastic part I have made is slighty bigger than the actual part. How can I resolve this?

Andrew

2

HI Andrew

Reduce the original by sanding and polishing before moulding

or

Mould as you have done and make a copy by painting the inside of your copy with a release agent vaseline/cooking oil etc and stuffing the copy with Milliput or similar and reducing in size as above when set then remoulding.

or

making a mould from a reduced master and moulding in clear polyester resin, the mould you pour the resin into can be made simply by pushing your master into plastacine etc

Hope this helps

Gary

3

Thanks Gary. It doesn’t sound easy.