There are so many factors that affect the results that you will have to do some experimenting to get this to work for you. I use different types of halftones but you will probably find the easiest one to use is line halftone. Keep in mind that the type of stone, the type and size of your grit, the type of nozzle and pressure you use on your sandblaster, the masking material, and experience all influence the final results. I waisted a lot of granite trying different methods until I developed the techniques that work with my system. Good luck and I hope you have success with your system.

Thanks a lot@@liz-artcreations6633

We use a Canon Pro-1 printer, and I don’t have a standard configuration for the halftones. I have to make adjustments based on each individual photo. My halftones are typical in the 30 to 60 dpi/lpi range. There are a lot of factors that I take into account. Your question inspired me to create another video, which I am currently working on which will cover a lot of the requirements and challenges associated with sandcarving. I hope it will provide helpful information, or explain why I cannot state specific values and settings.

My answer really will not help you. I have to expose my film for 9 minutes. The reason is that my UV bulbs are 30 years old. The bulbs get weak as they age so they take more time. Also bulbs are rated for different intensities (wattage) which also affects the time. You need to try experimenting with your setup to figure out what works for you. Good luck.