Customer Support | FAQs
SandMask FAQs
I have noticed that the Hartco SandMask is generally thinner than rubber resists. How can a thinner vinyl resist have as much resist capacity as a thicker rubber product? How does this impact the sign artist?
The increased density of vinyl over rubber allows for equivalent resist capacities in a thinner product. Because there is less material, there is a cost savings over rubber resists. The thinner gauge also allows for easier cutting which means less blade wear and longer blade life.
To what does the term "raw" refer to regarding substrates?
Raw means that the particular substrate has no sealer primer or paint applied.
What are the two release liner options for the 425?
Paper
Clear Plastic
What degree blade is recommended for cutting all the Hartco SandMask products?
A 60-degree blade.
What do the "S", "SP", and "SPI" signify in our part number system? (Hint: These are located in the middle of the part number, not the beginning.)
“S” = Unpunched
“SP” = Punched for the Gerber Slot Pattern and IBM pattern; both 15″ and 30″.
What do the S and HGS at the beginning of our part number signify?
“S” signifies Hartco’s Regular Grip Adhesive.
“HGS” signifies Hartco’s High Grip Adhesive.
What Hartco SandMask product would I use for blasting on foam?
Use the S425; our 25 mil product with Regular Grip adhesive, for primed and/or painted foam.
Use the HGS425; our 25 mil product with High Grip adhesive, for raw foam.
available in 15, 20, 25, 30 friction – 15, 30 punch
What Hartco SandMask product would I use for blasting on glass, Plexiglas or mirror?
S310; our 10 mil product, available in 15, 20, 25, 30 friction fed
What Hartco SandMask product would I use if I want to blast on unglazed tile, unsealed brick and other rough or porous surfaces?
HGS425; our 25 mil product with High Grip Adhesive for blasting pressures up to 90 pounds per square inch
available in 15, 20, 25, 30 friction – 15, 30 punch
What Hartco SandMask product would I use if I want to blast on wood, glazed tile, Avonite, Corian and some "softer" types of stone?
S425; our 25 mil product
available in 15, 20, 25, 30 friction – 15, 30 punch
What is the shelf life of Hartco SandMask?
One year from the date of manufacture.
What sets Hartco SandMask apart from other sandblast resist materials?
Hartco SandMask is a vinyl-based product while competitive materials are rubber based.
Which Hartco SandMask product would I use for blasting on stone, brick or concrete that has a rough or porous surface?
HGS535; our 35 mil product with High Grip adhesive for applications that require blasting pressures up to 120 pounds per square inch on rough or porous surfaces
available in 15, 20, 25, 30 friction – 15, 30 punch
Which Hartco SandMask product would I use if I want to blast on smooth concrete, glazed brick, polished stone or other flat and smooth surface substrates?
S535; our 35 mil product with Regular Grip adhesive for blasting pressures up to 120 pounds per square inch
available in 15, 20, 25, 30 friction – 15, 30 punch
Video resources:
Visit our YouTube channel for videos on Sign Blank Preperation and Sandblasting a Sign
