Tools and Tool Buying

[s.shrode1]

I have an opportunity to get a small gravity feed paint gun for free. Never used one and am not sure if it will be the best thing for finishing woodworking projects.  Does anyone have experience with this kind of gun and if so how well does it work? If it is not right for me I will pass on it.  Thanks for your help.

[woodgrinder]

Like any spray gun adjustment is the key.  A gravity feel somewhat limits spraying positions, a good spay plan will overcome the majority of those limitations.  I find the gravity feed ideal for small projects, as every drop of finish put in the cup can be used.  I have both gravity and siphon feed and the size of the project determines which sprayer I use.  Anything free is always worth a try, spray some solvent through it to check for leakage.  You want to check the seals around the needle valve and also around the nozzle where the needle should seat tightly, should not see any liquid leaking at the nozzle with trigger fully released. 

[Jim Frye]

I have used both gravity feed and siphon feed guns to spray automotive paints (lacquers & enamels).  I like the gravity feed just fine.  You did not state what brand and model of gun is being offered to you, but if it is small like a touch up gun, it might be worth the try.  I'd go for it based on the price alone.  You also didn't specify what you plan to spray with this gun, and that might help with any real advice.  I have a small siphon feed touch up gun from Harbor Freight ($20) and it is a real gem to use.  To be honest, I don't spray wood finishes as I don't have a spray booth seperate from my shop and I don't want overspray all over things there. 

[Larry.Jenkins]

I addition to all of the above, spray guns will only work well if the are very clean.

I have a Binks Model 7 and I completely disassemble it after each use and clean all the metal parts with lacquer thinner.  Then a little 3 in 1 light oil on the stem and work it back and forth.

I also have a Binks clone that cost me $23 that works as well as my Model 7 because I clean the clone the same way.  I use the clone for primers and the Model & for top coats.

I see no problems at all with a gravity feed gun.

Larry

[MSWOODcraft]

Knowing what needle size is on the gun, and what other sizes may be available, is also something to consider.  

Paint and other heavy bodied finishes require a bigger needle/tip size than do thinner viscocity liquids.    Knowing what needle size you have will go a long way to informing you whether you'll get the kind of fine mist pattern you want out of the gun for fine finishes.

Needle kits usually involve both a needle and matching cap set.

[kmealy]

The big question is what are you planning to spray with it, and where?   Forget using polyurethane.  Lacquers, WB, and shellac all spray well, assuming you have a place to do it.

Like everything else, it's just a tool.  It will not necessarily guarantee good results, nor poor results without knowing your skills and planned materials.

[s.shrode1]

Hey guys, Thanks for the input. I will get the gun and check it out as described.  I have a lot to learn re needle size etc but it will be fun.  As you all said the price is right!