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Quill DRO advice required

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old mart03/09/2019 16:33:49
4655 forum posts
304 photos

I have just bought one of Arc's vertical dro's for fitting to the Tom Senior.

**LINK**

It is not quite the same as the one we have fitted to the mill drill, and I cannot fathom the Pre+ and Pre- buttons. I have tried every combination of button sequences that I can think of, but none seem to do anything. Hopefully somebody on the forum has one and can let me in on their secrets.

mechman4804/09/2019 10:41:11
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2947 forum posts
468 photos

From Arc Euro site...

'Pre+ and Pre- Buttons: These buttons allow you to preset a target measurement e.g. +1.04mm or -1.04mm. Once set, you can then move the preset distance down (or up) to zero'.

George

not done it yet04/09/2019 17:11:44
7517 forum posts
20 photos

Top right of the page is an advert for Arc. There is a telephone number on it. I would suggest you use it and get the info direct from them?

old mart04/09/2019 19:45:20
4655 forum posts
304 photos

I found extra instructions in the box which are much more detailed, and with some practice, the extra features will become very useful. The dro was destined for the Tom Senior light vertical mill which we are working on as a replacement for the drill mill in use at present. There is very little space to fit the dro on the quill, so it has been fitted in place of the similar dro already on the drill mill. The reason for doing so is because the older unit is 1/4" narrower, and that makes it much easier to shoehorn in place between the depth stop and quill lock.

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