Uni-Mould curing issue

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Uni-Mould curing issue

Uni-Mould curing issue

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Legoman	Legoman posted 6 Years Ago HOT Topic Details
Group: Forum Members Posts: 29, Visits: 622	As you can see there are different colours on the cured mould surface. Probably I failed with lamination and got some air under the last layer...any idea?
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Legoman	Legoman posted 6 Years Ago HOT Post Details
Group: Forum Members Posts: 29, Visits: 622	+x Warren (Staff) - 9/19/2019 2:45:48 PM If you are worried, do a postcure of the mould and it should force the resin to an even cure by the time the postcure is complete. Thx Warren. By the way I do always post cure to avoid the "print through" effect on the gelcoat after the infusion process. Anybody else noticed this issue already?
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Uni-Mould curing issue

Legoman - 6 Years Ago

What tool & resin did you use to wet it out? Any heat applied in the process? What type of fiberglass mat was used? What ambient temperature did it cure at? Does it really matter if the other side i...

Noah Lieske - 6 Years Ago

Just like Uni-Mould system. Vinyl gelcoat, 2x100g CSM coupling coat with vinyl resin after that 4x450 CSM with polyester tooling resin. Ambient temp was arround 17-20 Celsius. I used brush to apply.....

Legoman - 6 Years Ago

It's just the cure indication in the resin. Different parts of the part may have been thicker and got hotter, or some were maybe catalyzed a bit higher. Or did the resin in the lower layers start to....

Hanaldo - 6 Years Ago

Yep, you are probably right! It is fully cured everywhere it was just weird to me...anyway next time I will apply 2 layers and next day just sand it back and apply the other ones (you think it can...

Legoman - 6 Years Ago

I'm sure it would be fine proceeding in that way but, ideally, you need to get 3-4 layers of the heavier CSM on at the same time so that the build-up of the tooling resin can reach its usual curing.....

MarkMK - 6 Years Ago

Yep thanks Mark! Everything is fine. I paid more attention on the other side and it is cosmeticly much better. Anyway the chemists told me only 2 layers is not recommended. If the laminating is too....

Legoman - 6 Years Ago

If you are worried, do a postcure of the mould and it should force the resin to an even cure by the time the postcure is complete.

Warren (Staff) - 6 Years Ago

Thx Warren. By the way I do always post cure to avoid the "print through" effect on the gelcoat after the infusion process. Anybody else noticed this issue already?

Legoman - 6 Years Ago

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