Can't prevent pitholes

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Can't prevent pitholes

Author	Message
BMac	B BMac posted 7 Years Ago HOT Topic Details
B Group: Forum Members Posts: 16, Visits: 63	I have tried 3 times to put a final coat on my carbon skinned parts but I still keep getting air bubbles and pitholes. I have sanded, cleaned, 3-1 mix and all new brushes etc. I'm using the xcr resin. Below are the photos. Can anyone help.
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Steve Broad	Steve Broad posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 408, Visits: 4.1K	I haven't done a lot of glossy carbon, but I have found that a light blow over with a heat gun can drive the bubbles out.
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BMac	B BMac posted 7 Years Ago HOT Post Details
B Group: Forum Members Posts: 16, Visits: 63	+x Steve Broad - 8/12/2018 9:47:02 PM I haven't done a lot of glossy carbon, but I have found that a light blow over with a heat gun can drive the bubbles out. I tried that. It does work but when the bubbles pop it leaves a small crater. Then I have to give it a brush but brushing seems to put more air bubbles in. Frustrating as I have to sand then down and try again Could it be possible I need to clean the carbon with alcohol after sanding. Maybe contamination is causing it.
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Geteda	Geteda posted 7 Years Ago HOT Post Details
Group: Forum Members Posts: 15, Visits: 58	you must mix slowly about 3 minutes and then degas the resin to full vacuum about 4 minutes, the mixture / viscosity in this resin xcr is 856cps, it is easy to trap air. You can try to put a final coat with lower viscocity resin.. the bubbles goes fast.
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Hanaldo	Hanaldo posted 7 Years Ago Post Details
Group: Forum Members Posts: 2.5K, Visits: 28K	What grit are you sanding to?
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BMac	B BMac posted 7 Years Ago HOT Post Details
B Group: Forum Members Posts: 16, Visits: 63	240 dry
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