How to cut sorbothane?


I recently read a glowing review of Herbie's Big Fat Discs, which are 5/16" thick by 1 5/16" diameter sorbothane discs. So, I did some research and I found a huge variety of sorbothane sheets available at McMaster-Carr. I bought a 12"x12" by 1/4" sheet of 40 durometer sorbothane for $29.

Does anyone have a clever and easy method for cutting discs out of this sheet other than scissors? I was thinking of a sharpened cookie cutter type thing as a tool which could be hammered down on the sorbothane, effectively cuttting a disc...

BTW, I can get 8 discs out of this $29 12"x12" sheet (with useful scrap left over), and 8 Herbie's Big Fat Discs would cost just under $90.
tvad
Do you have any pictures of the completed discs you can post somewhere? I wouldn't mind seeing how they turned out with the punch.


01-14-07: Riffer
Do you have any pictures of the completed discs you can post somewhere?
I can email photos if you send me your email address.
Herbie's Big Fat Dots are NOT Sorbothane, and have virtually no similarity to Sorbothane. Big Fat Dots are a unique blend of barium sulfate-filled platinum-cured silicones and vinyl siloxanes. They are not "squishy" like Sorbothane, but rather are a very firm, vibration blocking material. (And, by the way, the raw materials themselves are quite expensive.) Please do not compare Herbie's products with others; it's like comparing apples to soda pop.

Thank you very much,

Steve Herbelin
Herbie's Audio Lab
To describe all sorbothane generally as squishy is not accurate. Sorbothane (or ultra-soft polyurethane) is squishy or firm...depending on the durometer, which ranges from 30 to 70: 30 being about like a racquetball and 70 being similar to a pencil eraser.

For more info, search "sorbothane" on www.mcmaster.com.

Earlier in the thread, I stated that Herbie's Big Fat Dots are sorbothane. This was erroneous, and I should have been more careful about that statement. For that I extend my apologies to Steve (Herbie's).

It still may be valuable for those interested to compare the Big Fat Dots to sorbothane of a similar firmness. One never knows what's going to work best in any given system.
I'll bet you any amount of money McMaster-Carr stocks precisely the same sorbothane used by Herbie.-Tvad

Okay, I'll bet one million dollars. (Herbie's Audio Lab does not use Sorbothane or any variant of Sorbothane.)

Best regards,

Steve Herbelin
Herbie's Audio Lab