Capsray 9100 HVLP and gun rehab, part II #3: gun assembled and ready to go. this blog entry is now complete.

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Blog entry by Holbs posted 11-06-2017 01:37 AM 731 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 2: Gun all cleaned up. Some serious abuse I had to get rid of Part 3 of Capsray 9100 HVLP and gun rehab, part II series no next part

after purchasing new check valves, I re-assembled the gun and ran warm water though it while powered by the 4 turbines. Works like a charm! Am very glad I cleaned this Maxumm II (I know it’s a Maxumm II gun now with the hook broken off). Much more “umph” with the 4 turbines as compared to my single turbine $100 Summit HVLP system with plastic parts. Now, I understand how spraying finishes works with a gun such as how much material you can adjust via adjustment knob, how much air flow via air flow adjustment knob. Well worth the tear down, clean, and rehab of the gun because I just could not accept the gun in it’s condition upon arrival and seeing it’s beat up condition. I am glad I did this as I now know what every part of a HVLP gun does :)
Did not do anything to the HVLP turbine itself other than clean out the air filters (though, probably will replace them down the road).
The current gun needle installed has “3” and “G” imprinted on it. Next, will have to research what needle is best for polyurethane, shellac, etc finishes.
Not too shabby of a $100 auction lot win with about $40 added in for new parts.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

2 comments so far

View JRsgarage's profile


367 posts in 1110 days

#1 posted 11-06-2017 02:04 PM

it cleaned up nicely. we were using #3 tips for most finishes and #5 and 6 for paint. we rarely attempted latex and were slowly getting away from water based due to cleaning issues. i haven’t touched it in couple years..we were using when we were flipping homes in Houston as a side hustle.

-- “Facts don't care about your feelings.” ..., Ben Shapiro

View Holbs's profile


2257 posts in 2630 days

#2 posted 11-06-2017 02:07 PM

after some quick reads last night, came to find out #2 needle is best for atomizing while #3 is best all around. I’ll stick with #3 for some finish spraying for time being, seeing that #2 needles run $80+.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

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