Get on the road brothers!!!!
We in ‘BertaGet on the road brothers!!!!
My thanks to @Brent H for hosting this meetup also as well as to all the guys who came out. The weather was great, the food was great, the shop and the conversations were awesome! More than anything else I was impressed with the depth of knowledge among the members. Made me feel like a novice among a bunch of Jedi Masters!
That's really cool effect. But I'm mystified - if the tap is spinning against the work, how is it making the row of lines? I would have thought it would be like a super high helix end mill & surface would be essentially flat. I figured maybe ground off all but one row of 'teeth' behind the flute, but the tap looks intact.
Hi Peter, the tap has not been modified. Its a little difficult for me to explain properly, but here goes. Think of making a thread on the lathe of 16tpi. So in one inch we've cut 16 threads. Now if we attach another tool post directly behind with another threading tool, and advance them at the same time, we're cutting another groove 180° to the first thread. So now in one inch we have 2x16 threads=32 threads, if you had 6 cutters starting to cut a shaft all equally placed around, then you have 6 x 16 threads=96 threads in one inch. Its the same idea as multi start threads. Did I make that more confusing?That's really cool effect. But I'm mystified - if the tap is spinning against the work, how is it making the row of lines? I would have thought it would be like a super high helix end mill & surface would be essentially flat. I figured maybe ground off all but one row of 'teeth' behind the flute, but the tap looks intact.