- Joined
- Oct 4, 2014
- Messages
- 172
Several months ago I purchased a scissor type knurling tool and short of trying it out just to see if it works, it has been sitting in my tool cabinet. It seemed to work ok but it was rather primitive in construction, with loose fitting joints, which made for kind a sloppy assembly. I recently watched a video on You Tube of Winkys Workshop in which he kind of redesigned basically the same tool that I have, making some big improvements which will make it a better tool.
I had some shop time the other day so I thought this would be a good project to see if I could make mine better also, which I believe I did accomplish. One of the problems with mine was the extremely loose fit on the center bolt that the jaws swivel on. The shoulder bolt had about .060“ clearance, which made for a lot of side play on the jaws. The hole was drilled to an exact 1/2” so I just made a new shoulder bolt and also increased the thread size to 7/16”-14 over the 3/8”-16, which was a real improvement and tightened up the jaws real nice. I also switched to a locknut and snugged it up to take out any play.
The base is milled to fit the slot on my lathe compound so it automatically stays at 90° to the lathe bed, assuming the compound is preset for that also. The base started out as a piece of 3/8”-3”x3” angle iron which I cut down and milled to the needed specs. I also drilled a second mounting hole so I can mount it more forward for clearance on larger diameter stock. I then milled a piece to accommodate 1/2”-13 hold down bolt to mount it on the compound. I think the pictures are self explanatory but I would watch Winkys video as he always does an excellent job explaining how he does his projects and I certainly thank him for this one.
I tried it out and it worked great as far as no more slop and and a much more ridged mount to the compound by eliminating all the overhung load with the quick- change and tool holder on the compound. I’m not sure on the knurls themselves, it’s ok but I think the pattern could be better. I may pull the knurls out of my original bump type knurler and give them a try and see if the results are better.
I had some shop time the other day so I thought this would be a good project to see if I could make mine better also, which I believe I did accomplish. One of the problems with mine was the extremely loose fit on the center bolt that the jaws swivel on. The shoulder bolt had about .060“ clearance, which made for a lot of side play on the jaws. The hole was drilled to an exact 1/2” so I just made a new shoulder bolt and also increased the thread size to 7/16”-14 over the 3/8”-16, which was a real improvement and tightened up the jaws real nice. I also switched to a locknut and snugged it up to take out any play.
The base is milled to fit the slot on my lathe compound so it automatically stays at 90° to the lathe bed, assuming the compound is preset for that also. The base started out as a piece of 3/8”-3”x3” angle iron which I cut down and milled to the needed specs. I also drilled a second mounting hole so I can mount it more forward for clearance on larger diameter stock. I then milled a piece to accommodate 1/2”-13 hold down bolt to mount it on the compound. I think the pictures are self explanatory but I would watch Winkys video as he always does an excellent job explaining how he does his projects and I certainly thank him for this one.
I tried it out and it worked great as far as no more slop and and a much more ridged mount to the compound by eliminating all the overhung load with the quick- change and tool holder on the compound. I’m not sure on the knurls themselves, it’s ok but I think the pattern could be better. I may pull the knurls out of my original bump type knurler and give them a try and see if the results are better.
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