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  #1  
Old 07-21-2018, 07:48 AM
SgtZim SgtZim is offline
 
Join Date: May 2015
Location: Crittenden, ky
Posts: 173
Default Smooth prime - any tips?

I bought some Smooth Prime from AS, and the can has "new" instructions. It calls for using their brand 310 cleaner (diluted) and something called "prep wipes" that I can't find a source for. Probably not a big deal, just get the part nice and clean. The can commands you to wipe the parts with acetone first, then use 310 cleaner and "prep wipes".

Anyway, I poured the Smooth Prime on the parts and squeegeed it in. Let that dry and sanded - seems to work fine. Then I tried to spray a coat on. The can recommends spraying vs rolling on per the info on AS. I diluted it slightly with water and shot it with an Apollo HVLP with 2 mm nozzle and it was NOT good. Spit the stuff on like a textured ceiling.

I will probably try rolling on a few coats next. If I spray again I'll try diluting it a bit more and use the 1.3 mm nozzle.
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  #2  
Old 08-01-2018, 04:28 PM
SgtZim SgtZim is offline
 
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Location: Crittenden, ky
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follow up - I sprayed another couple of times diluting the smooth prime 5 to 1 and used the 1.3mm nozzle - worked much better.

Did not get a response from the mfg on cleaners and wipes - I just knocked the dust off with the air hose, and after the dust settled a quick pass with a tack cloth seems to work fine.
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RV-8 slow build
IO360-M1B Sensenich fixed pitch
Garmin G3X
GTN 625
GNC 255
GTR 20
GTX 45R
G5 x 2

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  #3  
Old 08-01-2018, 04:43 PM
dougnlina dougnlina is offline
 
Join Date: Jun 2016
Location: SF Bay Area
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Having personally used this product in the past, be sure to give it ample time to dry before spraying subsequent coats, especially of other non-water based primers.
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  #4  
Old 08-04-2018, 09:40 AM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is online now
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
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This is what I learned using smooth prime:
- Donít roll or squeegee, slightly dilute and spray. You will save yourself days of sanding.
- NEVER WET SAND! Let it sit for 2-4 weeks, sand, blow off the dust and immediately prime using a good two part epoxy primer.

While it worked, there are far simpler ways to prep fiberglass. I will never use this again.

Carl
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