C Craft, I'm a newbie, so any information I give in response is just gathered from what I have read, and could be entirely wrong as I have no real forge time in yet. But, I believe the pattern is from etching. And I've heard layering steels can be done by hand, just a lot more work and a bit harder. Tom, Absolutely gorgeous work sir. I've saved those pictures to my, "sexy knives" folder. Your handle work is just beautiful. A big thank you for sharing your technique with us.
I recently saw Thunder's original video on youtube and am glad to have found this thread after joining the forum. Many thanks to all you smiths that have collaborated and shared such cool knowledge with each other. I'll be looking forward to building one of these Mr. Mashers in the next few months as I setup shop! Also I'm glad to see this thread is still alive and kicking. Has been an excellent read so far, I couldn't put it down per se. I'm wondering if anyone has done more experimentation or has better documentation of fully automated setups that control both the air to jack motor and the check valve. Bronzetools - do you have any more in-depth information on how you setup your footpedal using a MAC valve? (I didn't know what these were, they are pretty cool devices! haha I just bid on a used 2/5 way one on ebay!) I'm thinking a 180 degree pneumatic rotary actuator might help open the jack more/lower it faster then the slight open/closed movement that I imagine using a pneumatic air cylinder would accomplish....but I think setting up the air lines for a rotary would be a bit more complex too....I'm honestly not sure quite yet. I still have a lot to learn as these mechanical components are all pretty much new to me as of beginning this thread. I really appreciate any information and clarity ya'll can help out with and am looking forward to becoming a member of this community! Cheers!