I am with the others on singing praise to you on the video. Thank you so much! I am a VFD & drive wheel away from finishing my grinder and have been thinking of how I want to do the tool rest. Seeing yours helps a great deal.
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I am with the others on singing praise to you on the video. Thank you so much! I am a VFD & drive wheel away from finishing my grinder and have been thinking of how I want to do the tool rest. Seeing yours helps a great deal.
They razor blank has to be that thick if you are making a 7/8 or 8/8 width so that the angle will be right on the finished blade.
The two wheel grinder is a great experiment, but not a great tool for razors in it present state. In theory it is great, but in practice it is so so. If I could figure out an easy way to make an adjustable rest/guide for the blank to rest on while grinding it would be a more useful machine to me, as it is I am most likely going to take apart the machine and make two grinders.
Here is a pic of my rest. It is not the best design, but it is what I could put together with the parts I had laying around my shop.
Attachment 74900
I usually start with a fairly coarse belt post heat treat. That is what works for me with the tool that I have and the way I work. If I had a larger grinder (2x72 or bigger) I would most likely start with a finer belt. There are lots of ways to skin a cat, my way is not necessarily the most efficient or best it is just what works for me.
Charlie
Thanks, Charlie -really appreciate your answers. I burned the tip of one of my first razors during post heat treating grinding - I was using a 240 belt (2x72), and I think the problem was a too fine belt and too high a speed. I still have one left from that batch, so I'll try 120 and a much slower speed. A rest similar to yours is in my to do list.
Skip
Big thanks for this video, I was waiting for something like this for a year or so :) If I may ask, what are the approximate surface speeds on the two setups? The post heat treatment speed seems very low, wich isn't a bad thing in my opinion. I am building a similar setup, and I am looking for some guidelines to not burn the blade post heat treatment, but it won't take years to finish the grinding.
Not what I was looking for from the thread's title. I'm very dissappointed!