3M PPS Accuspray Primer Gun

Received my new 3M PPS Accuspray Primer Gun.  This gun is intended to be easy to use and clean as well as high performing.  While I will only be using it for primer and maybe interior paint, I purchased this mostly for the priming of airframe parts.

The gun's man body is composite which is much different than the typical aluminum castings.  The spray nozzle is also made out of plastic which is also a major departure from the typical metal guns.



The body feels like it is high quality although you can tell it is composite since it us much lighter than typical metal guns.  The knobs are smooth and should work great for fine tuning the fluid flow and the fan pattern.

The gun comes with a flow restricting regulator and pressure gauge and the recommended pressure is at the gun when the trigger is pulled is 20psi for the 1.4mm and up spray nozzles.  Smaller nozzles are recommended at 24psi.




The gun is designed to use easily replaceable spray nozzles.  They are almost considered throw away and I assume many paint shops use them once and chuck them but many people report that they can last a good long time if you take care of them properly.  The Accuspray system has five different size nozzles available: 1.2 mm, 1.3 mm, 1.4 mm, 1.8 mm, 2 mm  The spray nozzles are clear to make it easy to see when they are clean.  They can be rotated up to 90° to get the spray pattern direction you want.  3M claims you can clean these nozzles with very little solvent.  We will see....

Next is the cup system.  This system is intended to be easy to clean (throw away the wetted parts), convenient in that you can mix right in the cup and a filter is built right into the lid.  The cup also allows paint to flow in all positions...even upside down!












It has a quick attach feature where it can connect to the spray nozzle with just a slight twist.














The cup system includes a mixing insert that is intended to be reusable.  It goes in the cup before installing the disposable cup liners.

The disposable cup liner goes in next.

The lids have built in filters.  You don't have to strain the paint with a separate filter.  The blue ones are 125 micron and the clear ones are 200 micron.



The PPS system cups, lids and inserts are available in several sizes.  micro (3oz), mini (6oz), midi (13.5oz), standard (22oz), and large (28oz).  Since the gun kit came with a standard size cup, I purchased a 50 pack of lids and liners.  Should be enough to cover my entire RV-10 build.