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Old 01-31-2017, 05:50 PM   #1
mjalaly

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Default Buffing a mold

Now that I have sanded my mold to 1000 grit, do you guys have any tips for Buffing and polishing it? Steps and products?
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Old 01-31-2017, 11:28 PM   #2
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Well 1500,then 2000 before any polish
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Old 02-01-2017, 04:26 AM   #3
canada011

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Wet or dry sanding?

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Old 02-01-2017, 04:59 AM   #4
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Wet
Then my weapon of choice is 3m
Fast cut+ then fine cut+
Then "possibly" one of their finnishing polishes but that's rare
Depends what the mould is and what its used for ?
Lot easier to put the work into the pattern and pull a good mould that has a good shine an just needs a light buff before you start
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Old 02-01-2017, 06:21 AM   #5
jjcomposites

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How big is the mold? For the 3M polish you ideally need a slow, adjustable speed buffer.Makita make a good one (electric). If the mold is small, you can get small pneumatic ones.
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Old 02-01-2017, 09:17 AM   #6
mjalaly

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I wet sanded it and its big mold.

all I have to polish with is my 9" orbital or my hand which is generally what i do.
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Old 02-01-2017, 02:01 PM   #7
Roger

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Quote:
Originally Posted by mjalaly View Post
I wet sanded it and its big mold.

all I have to polish with is my 9" orbital or my hand which is generally what i do.
I hope you were being funny there. Wet sand and polish a 40 foot boat hull mold and then you'll know what big is (and that's not as big as they can get). You feel like your arms are gonna fall off.
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Old 02-01-2017, 02:22 PM   #8
mjalaly

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You must have popeye arms!! Hahaha. No its not big but my orbital is too big for my mool. Also the only stuff I can seen to find locally for polishing is the meguairs stuff
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Old 02-01-2017, 05:00 PM   #9
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I found that the tooling gel coats I have used also take a lot of buffing pressure and time to get a gloss.
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Old 02-01-2017, 09:11 PM   #10
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Quote:
Originally Posted by fasta View Post
I found that the tooling gel coats I have used also take a lot of buffing pressure and time to get a gloss.

+1. Epoxy tooling coats don't polish.... You run the risk of opening up porosity in the surface.
Yes people will say there are polishable epoxy tooling coats........and agreed there are a few that are soft enough to get a shine....BUT not a mirror A class polish like something like duratec etc.

Also one mans shinny is another mans dull.....

Just take not and do a small test area first before sanding the whole mould.


What was used for the surface coat ?? Details ??

Tim
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