Uni Mould problem

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Uni Mould problem

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Darren	Darren posted 10 Years Ago HOT Topic Details
Group: Forum Members Posts: 54, Visits: 916	Ive had nothing but problems with uni mould, I'm clearly doing some thing wrong haha. Any way i pulled a part today (first time using the mould) (and first 2 piece mould) And as you can see from the pics it has gone dull and can see some print on it. Before i layed up, the mould was really shiny. Any advice would be great.. This is the other half (not as bad)
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Matthieu Libeert	Matthieu Libeert posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 955, Visits: 3.4K	Not sure but looks like you have some print through from the heavy fiberglass cloth behind... So might be you haven't let the gelcoat cure enough. Second possible problem might be how the release agent was applied, did you buff it inbetween the coats? Have you cleaned your mould with some hot soapy water after?! a third cause might be humidity or a bad cure due to low temperatures now Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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Darren	Darren posted 10 Years Ago HOT Post Details
Group: Forum Members Posts: 54, Visits: 916	matthieutje65 (18/10/2015) Not sure but looks like you have some print through from the heavy fiberglass cloth behind... So might be you haven't let the gelcoat cure enough. Second possible problem might be how the release agent was applied, did you buff it inbetween the coats? Have you cleaned your mould with some hot soapy water after?! a third cause might be humidity or a bad cure due to low temperatures now The print through does look like the heavy fiberglass, i mave have applied the tooling resin to early on to the coupling coat… I didn't buff the easy lease inbertween coats, just applied with one cloth and wiped away with another No i haven't cleaned the moulds yet
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Uni Mould problem

Darren - 10 Years Ago

I would suggest it's insufficient application of release agent. Were you using a chemical release...

Hanaldo - 10 Years Ago

I was using easy lease, 4-5 coats. One side was easier to release than the other

Darren - 10 Years Ago

Have you used it before?

Hanaldo - 10 Years Ago

No, its the first time using the mould and easy lease

Darren - 10 Years Ago

As said it looks like not enough release applied. I don't do the 4 or 5 coat thing, I apply coats...

VVS - 10 Years Ago

[quote][b]VVS (18/10/2015)[/b][hr]As said it looks like not enough release applied. I don't do the...

Darren - 10 Years Ago

Not sure but looks like you have some print through from the heavy fiberglass cloth behind... So...

matthieutje65 - 10 Years Ago

[quote][b]matthieutje65 (18/10/2015)[/b][hr]Not sure but looks like you have some print through from...

Darren - 10 Years Ago

How heavy did you apply the Easy-lease?

Hanaldo - 10 Years Ago

[quote][b]Hanaldo (19/10/2015)[/b][hr]How heavy did you apply the Easy-lease?[/quote] Quite heavy...

Darren - 10 Years Ago

Well a common issue with chemical release agents is over-application. Did it bead up or streak or...

Hanaldo - 10 Years Ago

It didn't bead up or streak, the surface of the mould just looked wet. I shall give it ago with...

Darren - 10 Years Ago

my friend i had the same crap only different options. That caused old wax or not enough release...

TomDesign - 10 Years Ago

Hi Darren, What is the pattern that your using - An original part or one that you've made? Either...

Rich (Staff) - 10 Years Ago

It was a plastic fuel tank then covered in 1mm sheet wax (was making a carbon cover)

Darren - 10 Years Ago

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