K
keith_y
After reading Northern Daves test about tip size differences from manufactures combined with my own trial and error of spraying 6520 and 8000 in summer heat, I would like to share this comparison and get feedback. These tips are KLC HVLP 1.7, Jet 100 RP 1.8 and 5000 HVLP 1.4. Notice the 1.7 is by far the largest. The 1.8 and 1.4 are identical to my eye. The 5000 has the diffuser which slows airflow down I assume.
I also have a Jet 100 2.5 poly gun that I tried spraying 6520 and 8000 mixed 4:1 out of because the 1.8 was struggling even with reduced primer. The 2.5 was too difficult to control. Each coat sprayed differently. Then I decided to try the 1.7 since it's actual nozzle opening was between the 1.8 and 2.5. It seems to spray the best for 6520 and 8000 mixed 4:1:1 part retarder. Ive found I have to use that much retarder to keep the primer from gelling in the 95+ heat that I have to spray in. Note, I only mix enough for one coat of whatever Im spraying. Im getting very minimal, if any dry spray and more mils for whatever reason even over the 2.5.
We also use PPS and Im 99% sure those are causing most of the issues. They just dont seem to flow like a cup or RPS. Any thoughts?
I also have a Jet 100 2.5 poly gun that I tried spraying 6520 and 8000 mixed 4:1 out of because the 1.8 was struggling even with reduced primer. The 2.5 was too difficult to control. Each coat sprayed differently. Then I decided to try the 1.7 since it's actual nozzle opening was between the 1.8 and 2.5. It seems to spray the best for 6520 and 8000 mixed 4:1:1 part retarder. Ive found I have to use that much retarder to keep the primer from gelling in the 95+ heat that I have to spray in. Note, I only mix enough for one coat of whatever Im spraying. Im getting very minimal, if any dry spray and more mils for whatever reason even over the 2.5.
We also use PPS and Im 99% sure those are causing most of the issues. They just dont seem to flow like a cup or RPS. Any thoughts?