The Shop > Tools
Anybody build Dan Gelbart angled laser centre finder?
PekkaNF:
VT:s lathe thread has some Dan Gelbart tutorials
One thing is sort of interesting:
[ Invalid YouTube link ]
Laser centre finder. It is angled and a bit unusual design.
Found this one:
http://www.practicalmachinist.com/vb/deckel-maho-aciera-abene-mills/laser-centering-jig-deckel-using-dan-gelbart-s-concept-292450/
Looks like it would help me on many ocassions. Soooooooo......has anybody build it and used it?
Pekka
drmico60:
Hi Pekka,
I have built two versions of the device, see:
http://mikesworkshop.weebly.com/laser-centreing-device.html
http://mikesworkshop.weebly.com/laser-centring-device-mk-2.html
John Gadgetbuilder (www.gadgetbuilder.com) has also built a version.
The device works well.
Mike
RobWilson:
So he makes a lathe / grinder accurate to 1 micron ,,,,,,,,,,,, then says using the mark one eyeball to line things up is very accurate :loco: aye right ! Bit of a builders tool :lol: :lol:
Why not just use the good old DTI and get it spot on :med:
Rob
vtsteam:
You'd kinda have to tram pretty darn good and have real nice bearings for that projection method to work out to 5 microns, as claimed. With projection any error is multiplied by distance, and bearngs don't always wear round, nor are shafts round enough generally on a commercial machine to allow a true circular 5 micron projection tolerance. And machine vibration? Well, I dunno, maybe I'm wrong on this. What do I know -- I live in a lot cruder world! :)
John Stevenson:
You also have to allow for any drafts and the workshop door being open if you are working to microns in the real world.
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