Unimould mould repair

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Unimould mould repair

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LaxFriedrichs	LaxFriedrichs posted 12 Years Ago HOT Topic Details
Group: Forum Members Posts: 58, Visits: 450	I had a pattern in a mould that I believed was mechanically locked. Since all was lost, I wanted to remove the pattern and do a thorough postmortem. To attempt this I made cuts into the flanged portion as pictured below. The 2mm wide cuts reduced the rigidity of mould slightly, and to my surprise the pattern could be removed!!! The mould seems to be pretty good, EXCEPT flange damage - the 2mm wide cuts, hacksaw holes, and loss of some gelcoat at hacksaw holes!! How do you recommend I repair it? It's still extremely rigid and strong, it just has to cope with a vaccuum bag... Thanks! Edited 12 Years Ago by LaxFriedrichs
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Joe	Joe posted 12 Years Ago Post Details
Group: Forum Members Posts: 310, Visits: 1.5K	Hi, After 48 hours, my little receipe is not set. As a reminder, I used 100 grs Unimold gelcoat + 2% catalyst + 2% easy lease, all mixed together. I applied that to a PP sheet so I can fail without touching the actual mold. Room temp is 19°C. I demolded the gelcoat today and it's set on the mold surface, but not quite yet on the outside. Texture is quite firm but I know it wont polish well. So, if someone has a receipe that works with wax additive, please let me know. I know I could use cling film, but I find a "chemical" way being more convenient, once the receipe is known. A $1000 electronic device will always protect a 10 cents fuse
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wozza	wozza posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 688, Visits: 5.4K	Wax additive, added at 2%, works a treat and cheap as chips. Available from EC or you could probably make your own. I know you said you wanted a chemical solution but bagging film also works in place of cling film. Carbon Copies Ltd
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Unimould mould repair

LaxFriedrichs - 12 Years Ago

Do you have a photo to look at?

carboncactus - 12 Years Ago

https://www.dropbox.com/sh/yb7qpd8ehtkt4mq/om7zUaxPE4 Cheers

LaxFriedrichs - 12 Years Ago

I see. wipe the general area with acetone, then apply some glecoat, maybe in a cooler temperature....

carboncactus - 12 Years Ago

Thanks I will get cracking on this when it's a little cooler. Also, I know it's a little late but...

LaxFriedrichs - 12 Years Ago

Depends. If its quite a straightforward, flatish shape, you can get away with 20mm. The more complex...

carboncactus - 12 Years Ago

Thanks Carbon :) I should have enough room - hopefully...

LaxFriedrichs - 12 Years Ago

Hi, I heared about repairing gelcoat (unimold, at least) with "wax additive", as opposed to cling...

Joe - 12 Years Ago

[quote][b]Joe (20/10/2013)[/b][hr]Hi, I heared about repairing gelcoat (unimold, at least) with...

wojtepanik - 12 Years Ago

What happens is the wax in the additive comes to the surface of the gelcoat forming an airtight...

Warren (Staff) - 12 Years Ago

Hey hey, Thx guys for your input. Actually I was searching for a receipe I could use, I did not...

Joe - 12 Years Ago

Hi, After 48 hours, my little receipe is not set. As a reminder, I used 100 grs Unimold gelcoat...

Joe - 12 Years Ago

Wax additive, added at 2%, works a treat and cheap as chips. Available from EC or you could probably...

wozza - 12 Years Ago

Why not just buy flowcoat? Use this to repair the mould with clingfilm/bag film/tape over the top...

FLD - 12 Years Ago

Thx Wozza, I did not pay attention that wax additive was available from EC. That solves my...

Joe - 12 Years Ago

I always use flash tape to repair moulds. Just put a blob of gelcoat, smooth it and lay a piece of...

carboncactus - 12 Years Ago

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