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Reply by Nate1

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Posted on Stopping HVLP Splatter

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Nate1

20 posts in 2625 days


#1 posted 01-23-2017 05:48 AM

Splatter issue resolved!

I was able to get rid of the splatter I was getting with both tip/cap/needle assemblies and without thinning. The 1.9mm definitely gave a wider fan of material. Thinning helped out a lot with the 1.3mm in achieving a decently wide fan of material.

Not 100% sure which tactic solved the splatting issue (my guess is the tightening), but I performed the following:

- I ensured the gun was clean inside and out (brand new gun, so not really an issue)
- Added the in cup filter (do not have any pour through filters on hand, so used what I had)
- I tightened the nozzle and cap on tighter than I would expect it to need to be. Previously I did tight with caution to the reality of soft metals are at play in these parts.
- Verified the cup’s vent hole was not clogged. It wasn’t.

Side note: Yes I was setting the pressure regulator while air was flowing through the gun. ☺

Thank you for your help.

Resources
- Spraying paint with HVLP guns: http://homesteadfinishingproducts.com/wp-content/uploads/2014/05/paintspraying_ver3.pdf
- Spitting spray gun: https://www.pittsburghsprayequip.com/2016/02/05/why-your-spray-gun-is-spitting/
- Measuring and adjusting viscosity: http://finishing.tips/measure-and-adjust-the-viscosity/
- HTVLP Troubleshooting: http://www.portlandcompressor.com/hvlp/trouble-shooting.aspx


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