Drilling Holes for Peepholes
- Some of the bricks that need to be replaced will require holes to be drilled in them in the field. These holes cannot be drilled in the factory because the alignment would not be perfect.
- To drill peepholes use a 1" diameter drill bit or hole saw. One can also drill with a smaller bit and then file out with a round, hasp-type file. In all cases, the peephole must be drilled perpendicular to the stainless case. It may be necessary to remove the bit several times and clean it out as you drill deeper. It may be a good idea to have someone watch from the side to ensure that you are keeping the drill perpendicular.
- Drill slowly through the firebrick using the pre-punched hole in the stainless steel.
- Measuring from the top of the brick to the top of the existing hole in the stainless steel case will show where the top of the drill bit will protrude. Adjust your angle of drilling accordingly.
March 30, 2025
