Joe Beaulieu
12-24-2015, 5:04 PM
Hi Folks,
First - Merry Christmas - I hope all you galoots have a great holiday with your family and its a very nice Christmas!
I have a question about grinder speeds. Many tools and grinder wheels recommend "slow speed" or "low speed" grinding operations. I have a variable speed Delta grinder. It is a very common and recognizable tool. It is spec'd that the range of rpm is 2000 - 3000. Does 2000 qualify as a slow speed? I have seen the range posted in places as 1600-3200, with the understanding that the "slow" speed is 1600. Are these speeds generalizations? Does it mean my grinder at 2000 would still be within accepted range as a low speed grinder? I think you get my drift...
I am considering grabbing a CBN wheel and using it to set the camber on my plane blades. Is this an acceptable way to achieve this? The wheel is expensive, so I only want to get it if it is going to minimize my sharpening time. I spend way too much time with new blades trying to get cambers with a honing guide (Lee Nielsen) and Shapton stones. I start on a 325 grit Shapton and use the counting strokes on each side method while applying pressure on opposing edges of the stone. This is after I have gotten the bevel to where I think it should be. At this point I have already done the back through the entire range of stones and it is mirror and flat. I have great success with planing using blades that come "pre-cambered" in used planes. However on my new blades I cannot seem to get the same arc. I realize the opposing pressure method won't make the camber particularly visible without using a straight edge. I am pretty frustrated using the stones. Its a ton of time and the results are pretty unsatisfactory. I am very interested in the CBN wheel as a solution.
I would appreciate any help any of you folks with more experience would care to lend. I feel this is my last sharpening "hurdle" and I want to fix this asap.
Thanks again all.
Joe
First - Merry Christmas - I hope all you galoots have a great holiday with your family and its a very nice Christmas!
I have a question about grinder speeds. Many tools and grinder wheels recommend "slow speed" or "low speed" grinding operations. I have a variable speed Delta grinder. It is a very common and recognizable tool. It is spec'd that the range of rpm is 2000 - 3000. Does 2000 qualify as a slow speed? I have seen the range posted in places as 1600-3200, with the understanding that the "slow" speed is 1600. Are these speeds generalizations? Does it mean my grinder at 2000 would still be within accepted range as a low speed grinder? I think you get my drift...
I am considering grabbing a CBN wheel and using it to set the camber on my plane blades. Is this an acceptable way to achieve this? The wheel is expensive, so I only want to get it if it is going to minimize my sharpening time. I spend way too much time with new blades trying to get cambers with a honing guide (Lee Nielsen) and Shapton stones. I start on a 325 grit Shapton and use the counting strokes on each side method while applying pressure on opposing edges of the stone. This is after I have gotten the bevel to where I think it should be. At this point I have already done the back through the entire range of stones and it is mirror and flat. I have great success with planing using blades that come "pre-cambered" in used planes. However on my new blades I cannot seem to get the same arc. I realize the opposing pressure method won't make the camber particularly visible without using a straight edge. I am pretty frustrated using the stones. Its a ton of time and the results are pretty unsatisfactory. I am very interested in the CBN wheel as a solution.
I would appreciate any help any of you folks with more experience would care to lend. I feel this is my last sharpening "hurdle" and I want to fix this asap.
Thanks again all.
Joe