Most, if not all, hvlp guns spit blobs of paint if air pressure is low. Tell us your pressure and we can tell you the fix. What size air lines are you using, etc. Air pressure at the tip depends on the paint sprayed and will be on the order of 20 or so psi. Too much air is also bad. Get a piece to practice on until you get your hvlp set up properly. Once the gun is set up the rest is less difficult.

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