91
CNC / Re: It's new to me
« Last post by ddmckee54 on March 03, 2026, 11:20:00 AM »vtsteam:
The base is a 470x550x30mm piece of laminated phenolic plastic, with a kraft paper core and what, if I'm remembering correctly, were known as canary covers. On my bathroom scales that chunk weighs in at about 25 lbs. In the mid to late 70's I was working in a plant that produced them, in the maintenance department. Every once in a while a sheet would get rejected, this one has about a 0.010-0.015" high spot about 200mm from the LH side, I suspect that was one the reasons for it's rejection. I'd keep my eyes open for any rejects that I thought might be usable in the future. Since they were bound for the landfill anyway, I'd get permission from the production supervisor to take them.
The only ones I wouldn't take were the epoxy/fiberglass sheets, those you can't cut with carbide blades. You have to use a diamond saw on them and basically grind through them. At that time, carbide saw blades for home use were EXPENSIVE, a diamond blade was the stuff of dreams. We had one guy in maintenance whose sole job was to sharpen and repair the carbide saw blades.
The base is a 470x550x30mm piece of laminated phenolic plastic, with a kraft paper core and what, if I'm remembering correctly, were known as canary covers. On my bathroom scales that chunk weighs in at about 25 lbs. In the mid to late 70's I was working in a plant that produced them, in the maintenance department. Every once in a while a sheet would get rejected, this one has about a 0.010-0.015" high spot about 200mm from the LH side, I suspect that was one the reasons for it's rejection. I'd keep my eyes open for any rejects that I thought might be usable in the future. Since they were bound for the landfill anyway, I'd get permission from the production supervisor to take them.
The only ones I wouldn't take were the epoxy/fiberglass sheets, those you can't cut with carbide blades. You have to use a diamond saw on them and basically grind through them. At that time, carbide saw blades for home use were EXPENSIVE, a diamond blade was the stuff of dreams. We had one guy in maintenance whose sole job was to sharpen and repair the carbide saw blades.
Recent Posts