Thread: Knurling Tool

Fred and Pete,

There is no adjustability. I made the knurling tool to sit exactly on the lathe spindle centreline. Same with the cut off blade. To use the knurling tool on the other Hercus ( lathe no.2 Pete) fitted with the standard cross slide, I use a height adjustable tool post. The 260 extended cross slide on the green ARL sits roughly 4mm higher than the standard slide, negating simple interchangeability of tooling.

BT

Note the .8mm gap is the gap between two 4 or 5 inch long knurled rollers, set with a feeler gauge. It is not the pitch, size, shape or depth of the knurl. All of the units I see use what assume from the info above is a medium or coarse diamond pattern knurl. The rollers spin in opposite directions which pulls the grain down through the rollers and crushes it. here is a pic.

If you are going to use Pipe you may find deflection by knurling if you use a conventional knurling tool.
If you were going to screw cut you you could hold in chuck and a centre.
The thread itself would depend on the size of cross hatch you want.
You could practice on a spare bit of material to find what fine thread suits.
You could either cut right then left,or just cut left or right and turn the job around and cut again.
The depth of the Cross hatch you want will be dependant on the final pitch you choose.

Originally Posted by 19brendan81

Note the .8mm gap is the gap between two 4 or 5 inch long knurled rollers, set with a feeler gauge. It is not the pitch, size, shape or depth of the knurl. All of the units I see use what assume from the info above is a medium or coarse diamond pattern knurl. The rollers spin in opposite directions which pulls the grain down through the rollers and crushes it. here is a pic.

Sorry my mistake

No problems, I should have put the pic up in the first place!