Re: HF Sand Blaster.
I have the same HF sand blast cabinet. I modified the nozzle assembly, and finally got it to work to my satisfaction. I also built a new dip tube assembly, the original dip tube was made upside down with the ''stiffener'' on the bottom, rather than on the top as is should be to keep the media from packing around the end of the tube. Over the top creates an air space above the end of the tube and it works much better. I also added a electric solenoid valve and a HF foot switch. Runs nicely off of my 5HP compressor. And upgraded the lamp to a LED, works much better than the original.
One other feature I changed was to modify the mounting system for the window with self tapping screws rather than the nut & bolt system as the original, I can change the window out in about 10 minutes, I also added a 100 mesh screen to the window opening to protect the window, lasts much longer than a bare window and you can see through the screen just fine.
Jim Dawson
Sandy, Oregon, USA