Topcoat Application

MaxMeyer Tutorial on Topcoat Application. Demonstration on two vehicles using MaxMeyer Aquamax basecoat and MaxMeyer Clear Coat.

 

 

1) Preparation

Mask

Using plastic sheeting, cover the vehicle for painting. Using a safety cutter, cut out the sections that are to be painted and mask accordingly.

Spot prime

For small rub throughs use MaxMeyer HP Primer Aerosol, apply a light coat at an approximate distance of 6-8 inches to the rub through.
Using the MaxMeyer Fade Out Thinner Aerosol, apply a light coat gradually wetting up to dissolve the overspray of the primer.

Clean

Using MaxMeyer waterbase pre-cleaner and a spray applicator, apply the pre-cleaner to the panels to be painted one at a time.
Wipe off the pre-cleaner using a quality pre-cleaning cloth. This will remove dirt, dust and soluble salts from the preperation process prior to the application of the topcoat.
Panels are now clean and ready for the next process in the application of the topcoat.

2) Gun Set Up

For the correct and best application of the MaxMeyer Aquamax Basecoat you need to ensure the Spraygun is set up correctly to get optimum performance out of the product. We will recommend a 1.3mm to 1.4mm tip size for the Aquamax Basecoat.
Using a gun gauge set the spraygun to the sprayguns manufacturers recommendation.
Place a piece of paper onto a panel onto a stand and number across the top from 1/2 though to 4 at 1/2 increments. Screw the fluid delivery on the spraygun fully in and then turn out 1/2 a turn.
Hold the spraygun approximately 5-6 inches from the paper infront of the 1/2 increment. Pull the spraygun trigger for approximately 1/2 a second, this will give you a fan pattern. The aim is to get maximum pattern size with minimum fluid deliveries so it gives you maximum control of the spraygun and product.
In this video it is 3 1/2 turns, so screw the fluid delivery fully in and then screw out 3 1/2 turns.
Then spray on the paper for a feel of what it wil be like when applying to the panel. The spraygun is now set up clearly for Aquamax Basecoat application.

3) Final preperation

Now that the vehicle has been cleaned and the spraygun set up for Aquamax application, it is important that the panels are blown and tacked clean. Using the tack cloths, blow and clean the panels.
If you have an anti static gun, now would be the best time to use and reduce the static in the panels.
The panels are now clean and ready for the application of the Aquamax Basecoat.

4a) For Single Coat Basecoat Application

Step 1

Holding the spraygun approximately 6-8 inches from the panel and at a Spraygun manufacturers recommended air pressure, apply one single wet coat. Apply the Aquamax nice and evenly with an approximate 50-75% overlap to achieve a nice wet uniform paint film. In this video you can see the wetness of the paint film on the panels. You can also see the distance of the spraygun air cap from the panel (8:20) and the wet orange peel in the close up.

Step 2

Using air movers or some form of dedicated booth blowing equipment, flash the basecoat dry for the next coat of Aquamax Basecoat. You can also use the air moving device by hand.

Step 3

When the basecoat has flashed off and is Matt in appearance, then its ready for the next coat of Aquamax.

Step 4

Again, apply the second coat of Aquamax exactly the same as the first coat. Again you can see the nice wet orange peel in the video close up. Again blow dry the Aquamax basecoat until Matt in appearance.

4b) For 1 Visit Basecoat Application

Step 1

1 Visit Application is where you apply the basecoat in one process rather than single coats. Holding the spraygun approximately 6-8 inches from the panel and at the spragun manufacturers air pressure recommendation apply a 3/4 wet coalesce coat to the whole panel.

Step 2

As soon as you have completed the application, go straight back to the beggining and apply the next 3/4 coat to a wet finish in appearance to the whole panel. This is known as a one visit application and speeds up the process time through the booth by removing one flash off drying process.

Step 3

When the basecoat has flashed off and is Matt in appearance, then its ready for the next coat of Aquamax.

5) The Light Coat Basecoat Application

Step 1

First of all the Air Pressure of the gun needs to be dropped to 1.5 bar. You apply the Aquamax to the dry basecoat at an increased distance of 8-10 inches and the dropcoat must not be allowed to wet up but must not be applied to dry so it has a speckled wetness in appearance. You can see the increased distance of the spraygun air cap from the panel in the video at (13:02)

Note:

Again over the 1 visit application you can apply the light coat drop coat exactly the same

Step 2

You can see the final appearance of the panels after the light coat drop coat application. Leave the panels to fully dry or dry blow with air blowers.

Step 3

The panels should now be tacked using low tack cloth removing any dirt or dust from the panels prior to the application of the Clear Coat.

6) 1 Visit High Solids Clear Coat Application

Step 1

Go through the process of setting up the spraygun for Clear Coat, as you did before for setting up the spraygun for Basecoat and reading the spraygun manufacturers recommended air pressure.

Step 2

Apply the MaxMeyer Clear Coat to the panel at an approximate distance of 6-8 inches with an overlap of approximately 50% achieving a 3/4 coalesce wet coat but not a full wet coat.

Step 3

When the whole panel has been sprayed go straight back to the beggining and start the next application.

Step 4

This time apply a second 3/4 coat looking to achieve a nice wet appearance in the clear coat film for the end result. Again in this video sequence at (16:54) you can see the 1 visit application process being carried out to the panels achieving the desired result in the wet clear coat film. At (18:25) you can see the distance, speed and overlap of the 1 visit application.
In the close up you can see the excellent finish from the spraygun with the MaxMeyer Clear Coat.
Reference: http://www.maxmeyerplus.co.uk
Classroom Painting