1. Here at Diamond, all we do is conformal coating and on the liquid side
about 95% of it is hand sprayed. My sprayers prefer the 20oz cups and that
seems to work fine for them with no complaints. The smaller cups give them a
chance to shake it out during refills. Obviously we keep a separate gun
ready for the different coatings (SR, UR, ER) and they hang the guns on a
rack in between batches or during fill-ups but nothing supports the guns
during spraying. 

2. We use shop air run through a refrigerated dryer then a
separator/desiccant dryer at the booth with a regulator to step the pressure
down. I know some who use nitrogen as well but that is only because they
already have a need for it for other operations.

Lloyd E Duso
Plant Manager
Diamond-MT
(814) 535-3505
 
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Thursday, February 07, 2013 4:33 PM
To: [log in to unmask]
Subject: [TN] Spray Guns - Round 2

Thank you all for your suggestions, I will be looking at several of them.

Some follow up questions:

1.  If you are using the gravity fed guns, with the large reserviors on top
- do you use some form of tool rest to take up the weight?  If so, what
kind?  If not, do your operators complain about the weight and what it does
to their wrist (repetitive motion issues).

2.  If you are using HVLP guns, are you using stepped down compressed shop
air (with drying and oil trap) or are you using a separate turbine system to
supply the air?

I use a turbine based HVLP gun in my woodworking and it screams like a
banshee, so I would be concerned about the noise.

Doug Pauls


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