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Steel sheet refinish
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Old 18th October 2017, 02:32 AM   #21
jfetter is offline jfetter  United States
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3M Automotive product:
http://multimedia.3m.com/mws/media/5...%20Etching.pdf

I see the dental product you mentioned, not familiar with it.
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Old 18th October 2017, 03:56 AM   #22
Dave Zan is offline Dave Zan  Australia
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Originally Posted by jfetter View Post
3M Automotive product:
Thank you, I have never seen this product, probably not distributed in Australia.
Rustoleum brand is available but I think I will stick with polyurethane.
I have a more-or-less acceptable surface texture now, will try garnet abrasive in my sandblaster and hope to improve it.

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David
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Old 1st November 2017, 11:28 AM   #23
HYPERTUNE is offline HYPERTUNE  Australia
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Originally Posted by Dave Zan View Post
I plan to use polyurethane primer, it's an area flooded by coolant and the industry recommendation is to use a polyurethane paint.
Metalworking machine? Depending on the coolant it might be worth using 2 part epoxy.
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Old 1st November 2017, 10:58 PM   #24
Dave Zan is offline Dave Zan  Australia
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Originally Posted by HYPERTUNE View Post
Metalwork...?....2 part epoxy.
Yes, it's the coolant tray and cabinet stand for a metalwork band-saw.
A 2 pack epoxy primer would probably be a little better but it's a pain to mix, and to have limited pot life.
I have done the full 2 pack epoxy + polyurethane topcoat in the past but for this small job it's just not worth it, plus the expense to buy paint when I only need a fraction of a can.
However, I did learn recently that there are now 2 pack spray cans, where some internal separator is broken before use.
Saves some of the fuss but fairly expensive, the POR-15 is already not cheap.

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David
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