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View Full Version : Sherline DROs for Mill and Lathe



Too_Many_Tools
11-04-2009, 12:37 PM
I noticed that Sherline has its DROs on special this month.

http://www.sherline.com/special.htm

I am interested in hearing your opinion on these DROs.

Are there any less expensive alternatives?

Thanks

TMT

PTSideshow
11-04-2009, 05:59 PM
I bought mine mill and drill with them installed they seem to work very well. Not having anything to compare them too you understand. I also have the CNC rotary table they sell and love it it paid for itself in time saved in the 1st 6 months I owned it. They put them on sale to, and they had a discount for retired people if you ask when phone orders.
:D

NiftyNev
11-04-2009, 06:24 PM
Sorry for the hijack. Can these be adapted to a Unimat3?

Nev

Waterlogged
11-04-2009, 07:46 PM
I may be mistaken but isn't the DRO getting it's reading from the handwheel and therefore displaying theoretical travel and not actual travel?

PTSideshow
11-04-2009, 07:47 PM
I would contact Sherline at their web site and ask they are great people and will help any way they can.http://www.sherline.com/
:D

Too_Many_Tools
11-04-2009, 08:05 PM
Sorry for the hijack. Can these be adapted to a Unimat3?

Nev

LOL...never hesitate to ask a question.

I would call Sherline to confirm that they can or cannot.

I can see it going both ways depending on how they were designed.

My GUESS is that they can...Sherline is rather good at their designs.

TMT

Weston Bye
11-04-2009, 08:49 PM
I may be mistaken but isn't the DRO getting it's reading from the handwheel and therefore displaying theoretical travel and not actual travel?

Yep, just a glorified handwheel. That being said, it also counts the number of times you turn the handwheel - no small benefit for those of us who can't count reliably. Nothing like miscounting and finding out that you were .050 off after you drilled the hole.:mad:

Another thing that the handwheel DRO does not account for is leadscrew/nut lash. All measurements need to be approached from the same direction.

Still, lacking a better alternative, I would like to have one.

Doozer
11-04-2009, 09:36 PM
You would have better accuracy using string pots.

--Doozer

hitnmiss
11-05-2009, 09:03 AM
Yep, it counts handwheel revs and interprets the distance.

It also has a backlash compensator, you can program in your backlash.

Expensive, but I sure liked mine (liked cause i have a Bridgeport now...)