How can we help?  Ask your own questions and we’ll answer them.Got a question about sandcarving? Our FAQ section was built around common questions posed by the sandcarving community.  Post your question here and we’ll be sure to address them as soon as possible.  Fill out the Comment Form below and be an active participant in your sandcarving education.

Washout Film Processing FAQ

How should I dry the film?

How long should I dry the film for before I use it?

What should I do if my image won’t completely develop/wash out, no matter how long I spray it for?

What should I do if my whole mask starts to dissolve/ delaminate/distort before I can wash out my image?

When I wash out my film why do the small details dissolve/ move/wiggle/delaminate?

Why can’t I use white backlighting in my washout booth?

Why should I use hot water for washing out my film?

Why does the film start to dissolve before I get the image washed out?

Sandblasting FAQ

What size compressor should I use?

How long will my blaster parts last?

What is the difference between Aluminum Oxide and Silicon Carbide?

How do I remove the mask when I am done etching?

Why do I blast THROUGH the mask?

Why won’t the mask stay on the glass when I blast?

Why is a pressure pot better than a siphon-fed blaster?

What size/type of grit should I use?

UltraPro Photoresist FAQ

What do I do if my UltraPro will not stick after developing and drying?

How do I know which side is the dull (emulsion) side of UltraPro?

How long can UltraPro be stored on release paper?

How long can UltraPro dry at room temperature?

How do I know when UltraPro is dry/ready for use?

RapidMask Photoresist FAQ

Can I use RapidMask for halftone applications?

What is the best artwork to use with RapidMask?

RapidMask does not require a washout step. How does it work?

Why must I use photonegative artwork instead of photopositive artwork?

How do I know if RapidMask is exposed properly?

I followed the instructions for setting up my exposure unit and the film turns dark blue but doesn't become brittle. Why?

Which side of RapidMask should I expose through?

How do I apply RapidMask to my substrate?

Which side of RapidMask should be applied to my glass or substrate?

Will RapidMask work with all substrates?

It is taking a long time to sandblast through the RapidMask. What am I doing wrong?

What is the easiest way to remove RapidMask after sandcarving?

How deep can I etch into my glass with RapidMask?

Photoresist Film Processing FAQ

How do I apply films to a round object?

How do I know when my film is dry or ready to use?

How should I prepare my glass for etching?

Are these products dangerous? Bad for my health? Will this process (and its debris) harm the environment?

How do I avoid air bubbles in my adhesive when it dries?

Why can’t I use a blacklight from a novelty store to expose? Or sunlight? Or a tanning bed lamp?

How long should I expose my films?

Why can’t I get the carrier sheet off of the mask easily?

How do I remove the carrier sheet when I’m ready to blast?

What detail or resolution level can I achieve with photo resist?

My artwork is black, why won’t this film work?

Why do I need yellow/safe lighting in my entire mask making process? Why can’t I work under white light?


Artwork Tips

Inverting Artwork

Film vs. Paper Positives

Computer Recommendations

Creating Electronic Halftone Positives

Halftone Guidelines

Creating Halftones in Photoshop

Resolution Test Pattern - Positive

Resolution Test Pattern - Negative


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