Charlie, Josh and Mike attended and made the ATM session on 12/1/12 a fun one. Charlie made a tool to work his 5 5/8" mirror blank on his machine. The tool was made of dental stone and marbles. He chose to use round marbles as the very small initial contact point of the marbles will more quickly grind into conformance to the already generated curve of the blank. We welcomed first time attendee Mike Wilson to the garage and were duly impressed by his interest and enthusiasm for ATMing. He is in the process of acquiring a kiln which he plans to use for blank making. Casting, slumping and annealing blanks are some of the things that he is planning on doing with the kiln. Josh used his bath interferometer to test an 8" mirror I recently have completed. We got good experience in getting good images of the fringes and using the program "open fringe" to evaluate the in 'grams. Josh and I will provide training on using the bath interferometer to my ATM mentor in February, so we are spending time getting ourselves proficient with this tool. Thanks to the attendees for making this a great session! Mat This message and any attachments are solely for the use of intended recipients. The information contained herein may include trade secrets, protected health or personal information, privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you are not an intended recipient, you are hereby notified that you received this email in error, and that any review, dissemination, distribution or copying of this email and any attachment is strictly prohibited. If you have received this email in error, please contact the sender and delete the message and any attachment from your system. Thank you for your cooperation