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Fitting DRO to Boxford model A

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raynerd:
Hi guys, I've got a cheap dro display with 2 glass scales. I've been looking at how to fit them on the boxford and with the very limited space under the carriage, the gib screws and the carriage lock screw, it seems almost impossible to mount it on the side opposite the chuck (even if i used a think scale or magnetic one (which I haven't got anyway!)). I can very very clearly see how to mount it to the chuck side of the carriage or saddle next to the tool post but this will lose me space working up to the chuck. Now I've checked this out and with all my chucks attached, I can still work about 60mm past the chuck (obviously 60mm more than I would need!!) and even with a face place, I'm pretty sure the carriage and tool would easily reach the faceplate work without the dro touching anything. Despite losing this available travel towards the chuck, I can't see how it would even be used anyway.

Has anyone else mounted their dro scale on the chuck side of the saddle?

Chris

mattinker:
There is no way you can mount it sticking out  behind the cross slide?

Regards, Matthew

raynerd:
I don't believe there is Matt - certainly no obvious way without countless brackets and the likelihood of me bodging it! I could probably fit a slimline magnetic, but not this glass one. There are the grub screws, limited space and the saddle lock nut. I just can't see a way with the scales I have. I just can't see an issue mounting it chuck side but I'm sure there is based on the fact I haven't seen anyone do it, hence I'm here! The usual issue is that it stops the carriage and tool getting right up to the spindle head but mine still will!!

BillTodd:
Not a great idea to mount a scale near the chuck - for obvious reasons.

Have you seen Doubleboost's videos about fitting a dro to his Harrison? They might give you some ideas

Years ago, I fitted a pair of cheap calliper scales to my Southbend , but they were a lot smaller than typical glass scales.

These are the best pictures I can find  :(

Jonny:
X axis easy on rear side and will have to fabricate brackets, best done any way.

Y axis can be problematic for usability, often over looked even by the pros.
Would you really want something in the way, logic prevails.
If mount chuck side think about facing off, chuck may hit, certainly larger jobs.
On the other hand not fond of opposite side, tailstock interference and extended distance before starting the task with reduced travel.
Bright side looks like can attach out board with some bracing and specific bracketry, that's the only realistic way to do the earlier Harrisons, new ones easy with magnetic.

Have you the C type covers?
Do these glass scales screw on to a backing, easiest just need shims to align.

Whatever you do note the routing of the cables, again don't want anything in the way or interfering.

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