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ozziesstang 10-02-2010 08:35 PM

primer test gun...2 thick
Hello...Im ready to spray first coat of primer on prepped truck. Using a new Eastwood concours gun with 1.8 nozzle at 8lbs per I began testing and adjusting the gun and got heavy (thick) results. Followed teck sheet for the MP383 SV high build primer with MH284 hardener at 4:1 ratio. My question is...although the cut sheet doesnt mention thinning the mixture...should I? and with what? Also if anyone is familiar with the gun EW part # 51550.....any tips on adjustments? Thanks

cjperotti 10-03-2010 02:09 AM

All 2k primers can be reduced 10 percent with thinner. 8 psi is a really low for any primer. Suggest you bring it up to around 29 psi and adjust from there.

SuthnCustoms 10-03-2010 04:48 AM

I think he was reffering to the tech sheet's recommended tip pressure at 8 psi,not at the gun itself.

Any time a tech sheet reccomends a pressure setting in the gun is usualy the tip pressure for spraying for a reference on what type of gun is best suitable for spraying the material..since just about any different type of gun will spray differently with inlet pressures they can't reccomend an inlet pressure.

I would read the tech sheet again and see what type of reducer is best compatable with it and how much it can be reduced for a better spray,then test some more panels and adjust the gun untill you get the best spray pattern and good lay.

ozziesstang 10-03-2010 09:58 AM

This is an OMNI high build primer. The sheet suggest (on second look) a
4: part primer to 1: part reducer to 1: part hardener. I swear I didnt see that the first 3 times I read it lol. I will get the MR reducer tomorrow...hopefully that will thin her up some. And thanks for the air advice. I Had it set at 25 lbs to the gun as a guess to the cap, but will kick it up a few lbs. :thumbup:

southernculture 10-03-2010 01:00 PM

I just finished priming my nova with axis versaprime 2k primer. I believe it is similar to what you are using. I mixed it 4:1:1 and it was a bit thin. I had alot of runs, not a big deal but would rather spend tomorrow not sanding runs. If I were you I would not thinning as much! My mix instructions were 4:1:1 with a 1.4 mm tip.

ozziesstang 10-03-2010 04:44 PM

I would like to avoid the runs too lol. I will test it once more at 4:1:1/2...and see how she does. Hope to have 2 coats of prime on by thursday evening, and get the base on next weekend. Thanks guys

deadbodyman 10-03-2010 05:29 PM

Ehat tip sounds awefull big ..thinning the primer might make things worse.and it might be too big for the base alltogether

ozziesstang 10-03-2010 08:02 PM

Is 1.8 too big for primer? I also have a 1.4 which I planned to use on base and a 1.2 for clear. Should I change nozzles?

deadbodyman 10-04-2010 05:42 AM

Maybe it'll be ok for the primer try the 1.2 for the base then the 1.4....
...for the clear the 1.4
All those tip sizes make things more confussing for a newbie...I use a 1.4 for base and clear but its is a little small for primer if its not reduced a little.

ozziesstang 10-11-2010 06:21 PM

1 Attachment(s)
Finally layed down a couple descent coates of primer and since it was such a nice day out today....I sprayed first coat of bace coat. Came out very fish, no shrinking...just need to hone the pattern while spraying. Just finished sanding with 400 and will try a second coat tomorrow afternoon. Then...Im going to read up on here about clears. :thumbup:

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