BMW April 2022

For many spray painters the most prized possession in the workplace has to the spray gun. It always needs to operate properly in a fast-paced workshop as the need invariably sees them switching from a number of colours to different panels and vehicles. Each hour sees a repair and with multiple spray booth in a body shop where a number of spray guns are normally in operation in at any time.

The clear up of the colours used after each spray job takes a lot of time resulting in a shop using large volumes of cleaning thinners which slows down in some cases, the cycle time of the repair.

Most new spray guns now on sale are based on a compliant system of high-volume low pressure (HVLP) applications. Often these top end models limit spraying in paint pressure to an average or just two bar air input. This compressed air flow drastically reduces the problem of over spray and its obvious health hazards to both eyes and lungs of a specialist spray painter.

Spray guns generally now seen in popularity are of the gravity overhead feed design on the market. These units feature a full range of adjustable settings which will allow you to dial in the gun to find its sweet spot when setting up the delivery nozzle. Always adjust the delivery fan pattern to gain an overall even oval spray out pattern six to eight inches away to create the correct overlap layout of your material being applied on the repaint.

A big point in the success of spray painting of new high solid materials has become your choice of nozzle and air cup sizes which in general terms range from ultra-low solid mica pearl materials which may require an air cup of just 1.1 to optimise colour matching, but a smart choice for twin pack materials ranges from 1.2 to 1.3 needle nozzle sizes.

All these recommendations for optimum results are readily available from your paint manufacturer of choice; BASF, AkzoNobel, Sikkens, Standox, Spies Hecker or Octoral and many others to name but a few. These top line paint makers have in many cases worked closely in research and development to work out exactly which spray gun makers piece of equipment works well on each of their different line up of paints for a best result every time.


Today’s spray guns are generally built to last or hold up in the workshop because they are made with stainless steel materials. Often the build also includes PTFE solvent proof composite durable seals and handles for ease of use are also ergonomic in design. Easy to use grips to work in the toughest of conditions in all day spraying.

The spray gun preference of any painter will always be his own choice as these technicians often have a bond with their favourite brand of choice. Newer offerings of a lighter overall weight with improved design will assist on the three-stage mica paint spray painting success.

A recommended high solid clear coat spray gun of the compliant type will deliver a full 65% transfer of efficiency or more of the material onto the surface. It will also deliver a drastically reduced material affiliation and in general terms a body shop will take around three months of paint usage to amortise or pay for these expensive spray gun options for the paint shop because they often deliver paint with a 60% saving on material used and these overall cost savings on materials used become a vital part of an efficient paint shop production site.

Using a top quality HVLP spray gun with an improved performance can help to transform your paint repair process giving the finished output of work a bet in class look while often saving both on material and savings.

Always remember not to soak a spray gun in thinners as this will in some cases damage the internal seals.