Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: Martin_1962 on 07 April 2009, 09:48:46

Title: Moulding silicon sealer
Post by: Martin_1962 on 07 April 2009, 09:48:46

Having a nightmare with this, I make a mould, seal it with polish of vaseline, then the copy sticks to the master, I did use cam cover sealant for one - that sticks like nobodies business.

Any ideas please?

Title: Re: Moulding silicon sealer
Post by: Marks DTM Calib on 07 April 2009, 09:53:24

Silicon sealer is shite for this type of stuff.....you need some polyurethane.

Title: Re: Moulding silicon sealer
Post by: Debs. on 07 April 2009, 10:09:05

PVA spray-on "Mould Release".....and Poly-Urethane 'rubber' (e.g: 'flexible' potting compound) as the matrix.

Title: Re: Moulding silicon sealer
Post by: Martin_1962 on 07 April 2009, 11:27:56

So where can I get a small amount of PU rubber from?

Have you guessed what I am trying to make?

Something black and rubbery

And will be rather good.

Title: Re: Moulding silicon sealer
Post by: Marks DTM Calib on 07 April 2009, 11:33:30

Sikaflex is black polyurethane

Title: Re: Moulding silicon sealer
Post by: Andy B on 07 April 2009, 11:44:36

Quote

So where can I get a small amount of PU rubber from?

Have you guessed what I am trying to make?

Something black and rubbery

And will be rather good.

The mind boggles!!!!  :o  :o  :o  ;D

Title: Re: Moulding silicon sealer
Post by: Kevin Wood on 07 April 2009, 12:04:29

Quote

Quote

So where can I get a small amount of PU rubber from?

Have you guessed what I am trying to make?

Something black and rubbery

And will be rather good.

The mind boggles!!!!  :o  :o  :o  ;D

Hmm. just check the release agent on a small area for compatibility if you're planning on using yourself as a mould.  :-X

 ;)

Kevin

Title: Re: Moulding silicon sealer
Post by: Martin_1962 on 07 April 2009, 12:48:43

I have some white Sikaflex - may make the mould from that.

OK for everyone wondering.

A part you cannot get seperately whice tears and disintegrates.

3 button keyfob buttons - I reckon if I can get it right I could charge a little more for new buttons when I refurb a fob

Title: Re: Moulding silicon sealer
Post by: Debs. on 07 April 2009, 12:52:38

Quote

......just check the release agent on a small area for compatibility if you're planning on using yourself as a mould.  :-X
Kevin

 ;D Spoil-sport! ;D