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Recommend prismatic type universal indicator stand

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PekkaNF:

--- Quote from: Pete. on October 11, 2016, 02:25:18 PM ---
--- Quote from: PekkaNF on October 11, 2016, 01:30:30 PM ---I always thought that comparot stand is completely differnet type of animal:
https://cdn.mscdirect.com/global/images/ProductImages/7512802I-21.jpg
http://i.ebayimg.com/00/s/OTYwWDEyODA=/z/sAMAAOSwLnBXVefF/$_1.JPG

When you need to compare bunch of stuff with a stack of slip gage.

Pekka

--- End quote ---

Yeah that's what it does.
Look up Mercer 108. There's a few on ebay one is listed as a DTI stand and the guy has fitted the stops as feet but really they should go on top to rest the part against.

--- End quote ---

Thank you.

uuh. + Postage: £22.03 and not very clear of accuracy. Looks like dunked in acid bath to remove (slight?) rust, but could have filed or othervise fiddled with it to look better?

I have no idea why he calls it comparator stand.

Pekka

PekkaNF:
These are not that common...specially the ones that have T-grooves at top and bottom, or least a prism.

This looks like a straight bottom:
http://www.machine-dro.co.uk/baty-bench-comparator-stand.html

I tried to find something semi fabricated... Looks like T-Slot table/profile is one option.

If slit 2-3 parts this could do whole lot of measurement kit:
http://vacuumtables.co.uk/product/steel-t-slot-plate-3020/

This would be even more versatile, because it has T-slot on both sides:
http://www.zappautomation.co.uk/pt-profiles-pt-50-t-slot-plate-w250-x-h20.html

My preference would be cast iron, but just wondering. How much those would warp if I slit them 2-3 parts? I would imagine that steel probably not much, but extruded aluminium would not like to stay straigt. Ali might be best left intact. It's not that heavy anyway.

Pekka

Pete.:
It's a shame you weren't looking a month ago

http://r.ebay.com/MFdfBW

PekkaNF:
Damnit!

PekkaNF:
Ok. Bought few things and this one is part of the OP:
http://www.sometcz.com/en/store/the-others/dial-indicator-stand-t-bases

Got it this week and I have been using it:
+ As described, it is big and heavy
+ cast iron stand does not rock either way, it has a 0,01 mm dip on the middle both sides. Intentional?
+ ugly but works
+ No twist or bow. Grinding looks level. When spun on granite, feels about right.

Minor/expected faults:
- cast iron base has few cast pores and edges are rounded from front loader treatment, but definately cast has been naturally aged and then milled/ground later.
- column is not straight, the whole affair looks really crappy. It mounts tight, but is visibly tilted. Does not really matter to accuracy, but - really!
- indicator mount/adjustmet went straight to bin. Lucily standard M4 thread, mounted there back lug dial gauge.

With modifications it looks absolutelu appaling but works pretty well. Stark contrast to chinese which I left to shop (170€!!!!!!!!!) which is pretty and painted, corners crisp and seems fine, but base had twist and rocked.

Pekka

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