I made a knurld ring on my brass knob.?but, as the result, something wrong with the knurld surface.
it's not even crossing each other. How can i solve this ?
i turned on my lathe with 240 RPM and fed with my hand.

For successful knurl use the following steps.
1) Use cutting oil
2) Position the knurling tool as close as possible to headstock.
3) Switch lathe on and advance the knurling tool into the cut as quickly as possible and do not dwell. You must be aggressive here.
4) Do not retract knurling tool until knurl is complete as you don’t want a double cut knurl. It will be almost impossible to pick up a partially completed knurl.
I have not had a bad knurl in many years. Remember be aggressive!
Dick

I agree with OldToolmaker?

You need cutting and aggressive.?
Watch videos on screw machines doing knurling.

Dave?

开云体育

Pull the knurl wheels a measure them . Knurling takes a lot of pressure & sometimes? much more pressure then ya would think to make a good knurl .Pressure also varies depending on the material yer using . Like mentioned go in hard & fast . Be extra careful if yer using a brush to apply yer cutting fluid . If the bristles get caught & sucked into the knurl wheels we may be having a different conversation '

good luck

animal

The work diameter should follow the rules here:

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for the cleanest knurl. On the 7x lathes, a scissor type knurling tool usually gives better results than the classic bump knurler that's common on larger machines.

Roy

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?stuck at the wrong heigth by some chips ?

Knurling is ?“not” a cutting operation but a forming operation. Keep that in mind. Too much swarf is an indication of not enough force being applied and doesn’t produce a clean knurl.