 |
To protect your spray gun make certain you clean and lube your gun immediately after use. Do not soak your gun.
Help clean your gun with a good cleaning kit - Please do not leave material in the can unattended for over 1 hour.
To protect your spray gun make certain you clean and lube your gun immediately after use. Do not soak your gun.
Help clean your gun with a good cleaning kit - Please do not leave material in the can unattended for over 1 hour.
Priming and molding tips.
| “Alligatoring” |
Not enough catalyst used. |
Check for proper catalyst levels. |
|
Substrate/primer incompatibility,
chemical reaction. |
chemical reaction.
Check compatibility of surfaces
and products. |
|
Primer sprayed on cold surface. |
Expose surface to higher temperature
before spraying when
ambient temperature is below
60°F, 16°C. |
|
Substrate not cured, gassing underneath
primer. |
Completely cure putties, pastes
and compounds before applying
primer. |
| Cracking |
Primer sprayed too thickly, too
fast. |
Increase the number of passes,
adding dwell time between
coats. For exceptionally thick
buildup, allow for gel to occur
before spraying and sanding further. |
Curing occurs on surface, but
not on substrate interface |
Primer sprayed on cold surface;
primer cure inhibited. |
Expose substrate surface to
higher temperature before
spraying when ambient temperature
is below 60°F, 16°C. |
| Bubbles Dimples (craters) |
Film build-up too rapid, solvent or water
trapped in primer. |
Increase the number of passes
with less primer per pass to
achieve desired thickness. Allow
for "flash-off" between passes. |
| Dry over-spray |
Acetone used as a thinner. |
Use slower solvent retarder |
|
Waterbase used water only |
User extender or fleutrol |
|
Spray pressure too high. |
Lower gun regulator 18-30 psi with trigger pulled or line pressure at 35-50 psi. |
|
Spray gun orifice too small. |
purchase larger orifice |
|
Substrate contaminated. |
Do not use a "tack rag", slow
evaporating solvent or solvent
soluble or colored rags or paper
to wipe the substrate surface. "tack rag" used for pure surface. |
|
Contamination in the air. |
Spray in a clean area to minimize
airborne dust, water,
waxes and/or silicones. |
|
Contamination in the air line. |
Spray with dry, filtered air. See our filter Section |
| Gelling or lumps in the fluid container |
Outdated product. |
Replace with new product. Rotate
products to use older primers
first. |
| Lifting or peeling |
Substrate not cured or substrate
and primer incompatible. |
Completely cure putties, pastes
and compounds before applying
primer. Check compatibility of
surfaces and products. |
| Orange peel |
Spray equipment set up incorrectly. |
Follow the instructions for equipment
setup or ask us. |
|
Spray pressure incorrect. |
Guns typically have an optimal operation level - always set with trigger fully pulled. |
|
Pot pressure incorrect. |
3-12psi is typical. Top coats 4-6psi. |
|
Viscosity too high. |
You may thin beyond the 10% limit set by manufacturers. Retarders are usually the prefered method of thinning.
|
| Gel - Pattern surface sticks to mold
upon release |
Improper release preparation. |
Follow paint manufacturer’s instructions
when applying release materials. |
|
Primer not fully cured before
compounding and polishing. |
Follow paint manual instructions in the application
guide for pattern surfacing. |
|
Improper release materials. |
Use only sealer-glaze and wax
release materials. |
| Pinholes |
Substrate porosity |
Fill porous areas with product - sanding |
Plug/pattern surface not hard or
glossy |
Primer not allowed to “breathe”
after sanding. |
Allow time for solvents to escape
before compounding and
polishing. |
|
Surface wet sanded when undercured;
primer absorbed water. |
Dry sand with initial sanding
step. Wet sand after “breathing”
occurs. |
|
Ambient temperature less than
60°F, 16°C when primer was
sprayed. |
Expose surface to higher temperature
before spraying. |
loses gloss
|
Primer not fully cured prior to
compounding and polishing. |
Dry sand with initial sanding
step. Wet sand after “breathing”
occurs. |
|
Old, outdated primer. |
New product. |
| Porosity |
Spray pressure too high. |
Reduce pressure but not under 18psi unless spray gun is a low pressure gun |
|
Spray orifice too small. |
Purchase larger orifice for your gun |
|
Acetone used as thinner. |
Use slower solvent retarder |
|
Waterbase used water only |
User extender or fleutrol |
| Pre-release of primer lifting |
Primer sprayed too thickly. |
Get Mil Thickness from manufactuer of paint |
|
Primer not completely mixed. |
Machine mix if necessary completely prior to
spraying, |
|
Primer not continuously mixed. |
Agitate or stir continuously when
spraying for 2 part products or solid content that settles. |
|
Improper release system used. |
Use higher surface energy release
system. |
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