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+--- Thread: pyroceram (/showthread.php?tid=113)
RE: pyroceram - Jeremy - 06-15-2017
When I stopped by the glass store in my town they had it ready to pick up that same day. It was about $20. Let me know if you guys are having trouble finding it. I would be happy mail some out from Virginia
RE: pyroceram - Ken S - 06-15-2017
Thanks, Jeremy.
I have emailed several local glass places in Ohio. If I cannot locate it here, I will contact you.
Ken
RE: pyroceram - Ken S - 06-15-2017
One glass store in Columbus replied. They can get it cut to size. It is available in either 1/8" or 3/16" thicknesses. Any thoughts?
Ken
RE: pyroceram - Rupert Lucius - 06-15-2017
(06-15-2017, 04:32 PM)Ken S Wrote: One glass store in Columbus replied. They can get it cut to size. It is available in either 1/8" or 3/16" thicknesses. Any thoughts?
Ken
The thickness at USA Knife Maker: 0.192"
Rupert
RE: pyroceram - Ken S - 06-15-2017
Rupert,
3/16" equals .1875. That's close enough to .192 for me. I checked with USA Knifemaker. They are not able to get the 1 x 7.5" size I need. I have not heard back from two other local shops. It looks like it's a go.
I know using glass for the platen creates a flatter surface. Does it also act like an improved hest sink?
I fitted in the cross piece of bb ply which will hold the motor control. Its two sides fit in 1/8" deep housings (dados). I cut the dados with chisels. Two number 6 x 1 1/2" screws will hold things together. No glue needed or wanted, since I expect to have to disassemble this from time to time.
Once everything is assembled and the motor control secured, I will halt construction and put the Viel back in service. Eventually, when I sense everything is OK, I will paint the wooden part red to match the Viel.
Ken
RE: pyroceram - Rupert Lucius - 06-15-2017
Ken
I, have never used glass on a platen.
Don, one of our members uses tile and loves it.
Glass should be better due it's flatness.
Have no info in ref to heat.
Please continue to keep the forum posted.
Mark our Moderator and/or Jan may be our resource people
Rupert
RE: pyroceram - Jan - 06-16-2017
As far as I know Pyroceram is glass-ceramic material which is manufactured by controlled crystallisation of various glass compositions.
Controlled crystallisation converts glass to denser material with valuable properties. Pyroceram is very hard and wear resistant and its mechanical strength is many times that of ordinary glass. Because its thermal expansion drops near to zero, Pyroceram may be heated or cooled rapidly without breaking.
RE: pyroceram - Ken S - 06-16-2017
Jan,
Thanks for the information. When I was a boy, I remember a family trip to upper New York state. We visited the Corning Glass museum, a fascinating place. As a demonstration of how flexible glass can be made, I remember a constantly moving spring made of glass. While developing a lens cover for locomotive headlights (which could withstand the temperature changes), one of the engineers brought one of the light covers home. According to the story, his wife tried using it for cooking and Pyrex was created.
Glass has been a major material in my quality of life: eyeglasses, camera optics, fiberglass insulation (invented in Newark, Ohio, near my grandchildren's school), Pyrex, Corning Ware, and Corelle dishes, fiber optic voice and data transmission in my work at the telephone company. The list goes on. Soon to be added to that list will be a Pyroceram platen.
If the two ends of the Pyroceram platen piece are not slightly rounded, I plan to soften any hard corners with a diamond paddle. Based on only a gut feeling, I believe that may lessen the wear on the back of the grinding belts.
I plan to use epoxy as the adhesive to hold the Pyroceram to the steel platen. Any thoughts on adhesives?
It would seem prudent to order a spare platen through Steve. Following Rupert's suggestion, I may order two and shorten one to allow more convex grinding near the wheel.
Thanks, all, for your thoughts.
Ken
ps I realize a custom sized piece of Pyroceram is an unusual, specialized item, which makes a larger sheet smaller. I expect it to be expensive, and am not complaining. Three pieces of Pyroceram cost about the same as the basic Viel (without motor). I think the Viel is a real bargain.
RE: pyroceram - Rupert Lucius - 06-16-2017
Ken, please
Break out your Crown or Speed Graphic, with the Highland flash - maybe Ansco 4"x5" and treat us to a photo.
Thanks
Rupert
RE: pyroceram - Jan - 06-16-2017
(06-16-2017, 03:35 AM)Ken S Wrote: I plan to use epoxy as the adhesive to hold the Pyroceram to the steel platen. Any thoughts on adhesives?
Sharpeners often use two component epoxy. E.g. JB weld epoxy can theoretically withstand temperatures up to 550F.
Grinding sometimes may generate static electricity. In this case you can use a spray which prevents its built-up.