snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jul 22, 2010 20:01:38 GMT -5
When I visited Johnsons rock shop,he gave me the grand tour.We were in the building where he had his frantom saw.I asked a question about me using obsidian to sharpen the blade,he said you dont have to do that,let me show you something.He had an iron bar with a metal roller on the end of it.he pushed it against the blade,closed the hood,and turned the saw on,pushing on the bar.The roller flattened the rounded edge. He said thats all he ever does.Also, all he ever used in his saw was diesel.This guy is about 80 years old. Just remembered him doing this,wondered if anyone else ever tried it.
snuffy
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Post by johnjsgems on Jul 22, 2010 20:07:46 GMT -5
I've heard of hammer and files to flatten the rounded edge. I know several people hat use diesel. I talked to two commercial shop owners that lost their shops when the diesel caught fire (spontaneous combustion). It is a poor way to save money.
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jcinpc
has rocks in the head
Member since April 2009
Posts: 722
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Post by jcinpc on Jul 22, 2010 21:11:12 GMT -5
a flintknapperwho buys coral from me montly uses diesel with a quart of refined motor oil, crazy stuff I tell ya
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Post by johnjsgems on Jul 22, 2010 21:18:37 GMT -5
The lapidary books in the 70's called for diesel/kerosene mixes.
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Jul 22, 2010 22:46:03 GMT -5
That tool sounds like an old style silicon carbide wheel dresser I used to use on my old SC rig. I've run regular type rock oil mixed with a little kerosene and know shops that run straight kerosene but it kind of scares me. The kerosene really makes your blades run nice though. I was actually at a shop where the guy was running in diesel and his saw started belching smoke and was beginning to catch fire. That would worry me a bit too....Mel
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snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jul 22, 2010 22:56:48 GMT -5
His saw was in an open sided shed where only the saw could burn. That would be enough to make me cry :'(I'm not gonna try it,was just passing along an oldtimers ideas.
snuffy
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Post by catmandewe on Jul 23, 2010 15:04:07 GMT -5
I bought an estate from an old timer who told me that they used a ball bearing on a stick to flatten the blade back down. He said that they started doing that because the hammer method made the arbor wear out faster from the tapping on the edge of the blade, but the roller does not do that. His stick was just a 1 x 2 with a bearing screwed onto the side of the stick right at the end.
Tony
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Jul 23, 2010 22:09:31 GMT -5
I have done the hammer trick once on my WF blade, and it cut better after.
Nate
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