Siege X1LP Fine feed

Could some kind soul with an X1 take a measurement of the fine feed on the quill. Mine is marked as one division = 0.03mm. However one full revolution of 60 divisions gives me a total movement of 1.83mm.

The error seems to be created in a short arc. For two thirds of the rotation of the knob, 10 divisions feed down 0.30mm. For 20 divisions at one point in the rotation the down feed is 0.31 and 0.32. 

I found out when I used the feed to cut a 6.Imm deep slot in a piece of 6.25m aluminium, and the extra 0.1+ meant the bottom tore out. 

Not sure if there is a fix but 8mm aluminium on order, and a plan to fit a cheap DRO got added to the project list.

Edited By Peter Cook 6 on 12/11/2020 19:16:44

My SXP mill fine feed has so much backlash, you will be best to fit a DRO, no problems after. When using the fine feed I pull down on the handle and turn the fine feed knob as this takes up the backlash if you don't the cutter could drop approximately 1mm, I would imagine that your fine feed is the same as mine.

Bob

Fitted a DRO on the quill on mine and solved the problem. Dave W

OK, get the message. This was this afternoons little project. Seems to work OK.

Fitted a E*ay digital LCD tyre tread gauge to mine works a treat less than a fiver delived,

That's what mine is. Just fitted between the chuck guard screws, and a neodymium magnet glued to the end of the rod to connect to the quill. No modifications to the mill.