Talk Composites - The Forum for Advanced Composites

EG60 Epoxy Tooling Gelcoat

http://www.talkcomposites.com/Topic25984.aspx

By TURK - 5/12/2018 11:23:04 AM

Hi all,

I'm currently working on a set of headlight covers. 
What I'd need to know if anybody has any experience with this is,  will 'EG60 Epoxy Tooling GelCoat' attack ( or even stick to ) PETG plastics ?
I've seen a couple of YouTube videos using similar products ( EC's and Mathiew Libert's ),  and it looks as though they used it directly onto ABS plastics.

Also,  is it OK to use Monster Clay ( sulphur free ),  as a gap 'filler', or is it necessary to use Plasticine?
A better explanation of what I'm doing ( bottom of page ) > Quad Headlight thread

Thanks


TURK
By TURK - 5/14/2018 10:25:03 AM

Hi Hanaldo,

'Filleting Wax' ! .........  I hadn't thought of that one Rolleyes  I've got a big block of it somewhere.  I think I'd rather use that or Plasticine over Monster clay as well.  I have to use a soft pliable material on the inside corners of the mould,  as I can't vacuum form a right angle,  so a completed mould with sharp 90° corners is a big no no in vacuum forming.  With your guidance and understanding of what I'm trying to achieve has been most helpful,  I thank you for your time.
I usually approach what I read on the internet with scepticism,  but on this forum,  and it's members like yourself,  us newbies can rest assured that the information is pretty accurate  BigGrin  You have put my mind at rest.

I actually need the high temp EMP160 as I'm simply making a mould in order to make some tooling plugs for vacuum forming.  So I'll be making the tooling plugs using CS25 Condensation Cure Silicone Rubber,  and casting Vac-Cast Epoxy resin into them.  This should in theory give me a positive of my headlight covers with twin headlight apertures in them.  Then I can vacuum form dozens, or even hundreds of sets of headlight covers  BigGrin

I know it's a long winded way of doing things,  but I really have no choice in the matter,  as my current prototype headlight cover plug,  is constructed with the original headlight glass!  >>


Literally dozens of coats of Patter-Coat-Primer,  loads and loads of sanding,  and I've got a pretty solid prototype mould to work from.  But for obvious reasons I can't put two headlight apertures in these,  hence the reason why I need another mould.


TURK