By HammondR - 3/2/2017 10:03:33 AM
Hi folks,
I'm trying to do my first infusion at the moment, and I'm being driven crazy by the vacuum leaking.
The mould I made myself, it's been painted with 2k automotive paint & clearcoat, the surface finish is good but not perfect (a few minor bits of 'orange peel' texture).
I've tried bagging it three times now, the last time I tried applying the tacky tape to the bag first (which I found a lot easier actually), each time it will leak though.
I have spent ages working the tacky tape in to make sure it's firmly pressed down, no creases etc. Where the vac line enters I made sure the connector was clean and no creases etc.
Initially I had applied release agent to the whole mould, including where the tacky tape goes, after the 2nd attempt I tried to clean this off using brake cleaner in case it was causing an issue, but still no vacuum. I don't know if that could be the issue, but I presume the brake cleaner would remove the easy-lease...
I can hear the bag moving slightly as the vacuum fades and it seems to come evenly from various places, so I can't pinpoint one place where the leak is occuring.
Would appreciate any tips on this as I'm going mad!
Thanks,
Rich
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By HammondR - 3/5/2017 6:35:15 PM
Hi guys,
Thanks for all your advice so far.
Interesting points about the temperature, it certainly has been cold in there when I've been working, so I'll try warming the tacky tape up next time. That said, it did seem extremely sticky and well stuck to the mould when I removed it. Perhaps next time I'll bring it in the house for the bagging, rather than doing it in the garage...
I'm going to bear in mind some of these comments and have another crack at it in the next few days.
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