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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Using oil emulsion cutting fluid for hand tapping - update
I finally got around to trying Rustlick WS-5050 emulsion for hand
tapping in 1018 steel. It works quite well, and yielded nice smooth threads. I wonder if the concentrate works better than the emulsion. The concentrate is $20/gal, which is a big improvement over $10 for 4 oz. The test was cutting the 5/8-18 threads in the T-Nut for the Dickson toolpost on the Clausing 5914. The tap is spiral-pointed (ie, a gun tap) and was made by Greenfield. Joe Gwinn |
#2
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Using oil emulsion cutting fluid for hand tapping - update
Joseph Gwinn wrote:
I finally got around to trying Rustlick WS-5050 emulsion for hand tapping in 1018 steel. It works quite well, and yielded nice smooth threads. I wonder if the concentrate works better than the emulsion. The concentrate is $20/gal, which is a big improvement over $10 for 4 oz. The test was cutting the 5/8-18 threads in the T-Nut for the Dickson toolpost on the Clausing 5914. The tap is spiral-pointed (ie, a gun tap) and was made by Greenfield. Joe Gwinn Joe Coincidentally I cut that exact same thread for a t-nut for my Clausing 5904 yesterday. Steel unknown but probably 1018. I used Tap Magic new formula (no where near as good as the old stuff), and got a decent thread. The t-nut is for a homemade tool post (basic idea was from an article in a recent Machinist's Workshop) I modified it to accept BXA or 200 series tool blocks. The Phase II block I usually use sometimes interferes with the workpiece and or tailstock center, and besides, it was a somewhat challenging project. I'm single point threading the bolt but ran out of time to finish it yesterday. Regards Paul -- ----------------------------------------- It's a Linux world....well, it oughta be. ----------------------------------------- |
#3
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Using oil emulsion cutting fluid for hand tapping - update
In article ,
Paul wrote: Joseph Gwinn wrote: I finally got around to trying Rustlick WS-5050 emulsion for hand tapping in 1018 steel. It works quite well, and yielded nice smooth threads. I wonder if the concentrate works better than the emulsion. The concentrate is $20/gal, which is a big improvement over $10 for 4 oz. The test was cutting the 5/8-18 threads in the T-Nut for the Dickson toolpost on the Clausing 5914. The tap is spiral-pointed (ie, a gun tap) and was made by Greenfield. Joe Gwinn Joe Coincidentally I cut that exact same thread for a t-nut for my Clausing 5904 yesterday. Steel unknown but probably 1018. I used Tap Magic new formula (no where near as good as the old stuff), and got a decent thread. I have Tap Magic and it does work, but it's annoyingly sticky and expensive too boot. When I switched from toilet water coolant for drilling to WS-5050 oil emulsion, I noticed that I didn't seem to need the Tap Magic/ The t-nut is for a homemade tool post (basic idea was from an article in a recent Machinist's Workshop) I modified it to accept BXA or 200 series tool blocks. The Phase II block I usually use sometimes interferes with the workpiece and or tailstock center, and besides, it was a somewhat challenging project. I'm single point threading the bolt but ran out of time to finish it yesterday. Well, I wimped out and bought a 2' length of threaded rod. As for the T-Nut, I added a 1/4-20 setscrew resting in a filed flat in the side of the rod to ensure that the rod does not turn while the clamp nut is being tightened. The danger is that if the rod turns, one can deform or even tear the T-slot out. Joe Gwinn |
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