jscpm
Titanium
- Joined
- May 4, 2010
- Location
- Cambridge, MA
I recently got a new heat treatment furnace and the manufacturer recommends using an insulating block in the front of the furnace compartment. The door has a built in insulation block, but basically the idea is that you are supposed to also insert a fairly tight fitting block behind the door as well to maximize insulation.
They supply a block which is about 1 x 4 x 4 and fits the opening closely. The problem is that it is incredibly fragile. It appears to be made from pressed ceramic fiber and it crumbles under even pretty slight pressure. The block has two depressions in it which are intended to be finger holds, but in practice the block just crumbles more every time I try to put it in or take it out of the furnace.
It seems like some kind of knob needs to be built into the block to allow it to be manipulated successfully. Anybody have experience with this kind of thing?
They supply a block which is about 1 x 4 x 4 and fits the opening closely. The problem is that it is incredibly fragile. It appears to be made from pressed ceramic fiber and it crumbles under even pretty slight pressure. The block has two depressions in it which are intended to be finger holds, but in practice the block just crumbles more every time I try to put it in or take it out of the furnace.
It seems like some kind of knob needs to be built into the block to allow it to be manipulated successfully. Anybody have experience with this kind of thing?