pre-warming dubbs!

[emidisc]

Trolls how long do you pre-warm your dubbs before cutting ie with 100watt bulb & how close do you position it from disc.
many thanks
emidisc

[piaptk]

Also, do aluminum core dubs warp in prolonged heat?

I am thinking about using one when I am cutting picnic plates to avoid having to reset up my whole lathe everytime I go from a thick substrate to a super thin one.

I cut for hours at a time when in picnic plate mode, and use a heat lamp. Tried a regular LP once, and doubt anyone would be shocked at the fact that the edges curled up like a baby to it's mother bosom.

[opcode66]

I use a heat gun to measure the temperture of the disc prior to cutting to inusre that it is at the proper temperature. I find that if I can get it to around 92 degrees across the entire surface then it is good to go.

With respect to lacquers, the covering is heat sensitive. In fact, it is extremely flamable! Be careful brother!