Gelcoat Gun Nozzle Size


Gelcoat Gun Nozzle Size
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MarkMK
MarkMK
MarkMK
posted 10 Years Ago HOT
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I've found the supplied Fn6 nozzle okay with GC 50 but experimenting a bit with the pressure and flow adjuster on the gun might be worthwhile.

 I'm certainly going to try a smaller nozzle for products like the pattern coat primer, as when you've thinned it with acetone, as recommended, it is very thin and it's hard to always get an even coverage. The firehose analogy is certainly spot-on where that's concerned
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Hanaldo
Hanaldo
Hanaldo
posted 10 Years Ago HOT
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Yeh that's what they are designed to do. I find them way too much if you are doing anything smaller than a bonnet. Problem is, it isn't totally the nozzle size that is the issue, it's the combination of the nozzle size AND the air pressure required. 80psi is always going to cause a lot of overspray, and while a smaller nozzle might help a bit it won't make it any cleaner. 

I suggest using a HVLP gun, one that can handle acetone. Use a 2.5-3mm tip and it will work great, you just need to be careful not to let the gelcoat go off in the gun because unlike the G100 it's impossible to clean once it does. 
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Brian_s
Brian_s
Brian_s
posted 10 Years Ago HOT
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Hi,
I have got a Gelcoat Gun and find it a bit like using a fire hose.
I am sure it is great for covering a large area but most of my moulds are only about 50mm wide but long.
I only use GC50 at the moment.
Has anyone tried smaller nozzles? If so what size?

Brian.
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