Have A Blast!Blasting boxes can be many different shapes and sizes...this one just happen to meet my immediate needs.
I have to admit that I've customize mine a touch, I'll mention what I've done as we go through the pictures.
I cut the bowl down to about 2" from the rim. I then made multiple cuts towards the rim leaving about 3/4" uncut nearest the rim. That uncut portion covers the 3/4" plywood hole and makes for a nice smooth entry into the box. The multiple cuts resulted in about 3/4" tabs that were folded over on the inside and stapled to the inside of the box holding the bowl rim securely to the box. The covers just keep the dust in and spiders out when you aren't using it. The bowl was 4 1/2" inches across - just right for me.
The bottom (which I'll point out later) has a 3/4" rim set in 3/4"
from each side. This keeps the sides square and helps align the bottom
with the sides when you put it together.
OK, so there's a quick tour of the blasting box. As I mentioned I made
a few modifications as time has past and I'll show you what those are
here. The modifications mostly came from necessity - quicker changes,
projects too large, more equipment to play with!!