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Author Topic: Micro DRO made from tyre tread depth gauge  (Read 75827 times)

Offline Corvus corax

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Micro DRO made from tyre tread depth gauge
« on: August 03, 2011, 04:55:30 AM »
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Baldrocker

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Re: Micro DRO made from tyre tread depth gauge
« Reply #1 on: August 03, 2011, 06:57:02 AM »
Way cool idea
BR
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Offline Stilldrillin

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Re: Micro DRO made from tyre tread depth gauge
« Reply #2 on: August 03, 2011, 08:38:45 AM »
That's a handy little weapon!  :bugeye:

What a great idea!  :clap: :clap:

David D
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David.

Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline Corvus corax

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Re: Micro DRO made from tyre tread depth gauge
« Reply #3 on: August 03, 2011, 10:57:03 AM »
I found the depth gauge on Ebay for around €5 shipped. I think I will take two and experiment. I have some Neo magnets that are drilled and countersunk for screws.
Will be interesting to see if they also have a data port like some of the cheap callipers have.
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Offline Stilldrillin

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Re: Micro DRO made from tyre tread depth gauge
« Reply #4 on: August 03, 2011, 12:39:09 PM »
Just ordered one meself........

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=360382393482&ssPageName=STRK:MEWNX:IT

Looks to be a crackin' little tool!  :D

David D
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David.

Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline PeterE

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Re: Micro DRO made from tyre tread depth gauge
« Reply #5 on: August 03, 2011, 01:18:36 PM »
Does a left-hand version exist or can the read-out be turned upside-down?

That would be ideal for a high-precision saddle-stop I think?

BR

/Peter
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Offline doubleboost

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Re: Micro DRO made from tyre tread depth gauge
« Reply #6 on: August 03, 2011, 06:01:08 PM »
Well worth a go for a fiver
Just orderd one
John
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Offline mcr

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Re: Micro DRO made from tyre tread depth gauge
« Reply #7 on: August 03, 2011, 06:13:22 PM »
Me too
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Offline Corvus corax

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Re: Micro DRO made from tyre tread depth gauge
« Reply #8 on: August 05, 2011, 04:06:20 AM »
Quote from: Stilldrillin on August 03, 2011, 12:39:09 PM
Just ordered one meself........

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=360382393482&ssPageName=STRK:MEWNX:IT

Looks to be a crackin' little tool!  :D

David D

Yep those are the guys. I wasn't sure if I could post the auction link. I've got two on the way.
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Offline BillTodd

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Re: Micro DRO made from tyre tread depth gauge
« Reply #9 on: August 05, 2011, 07:29:46 AM »
Quote from: PeterE on August 03, 2011, 01:18:36 PM
Does a left-hand version exist or can the read-out be turned upside-down?

That would be ideal for a high-precision saddle-stop I think?

BR

/Peter


Just arrange for the 'probe' to extend from the back/top instead of the bottom/front.
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Bill

Offline PeterE

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Re: Micro DRO made from tyre tread depth gauge
« Reply #10 on: August 05, 2011, 12:07:56 PM »
Quote from: BillTodd on August 05, 2011, 07:29:46 AM
Quote from: PeterE on August 03, 2011, 01:18:36 PM
Does a left-hand version exist or can the read-out be turned upside-down?

That would be ideal for a high-precision saddle-stop I think?

BR

/Peter


Just arrange for the 'probe' to extend from the back/top instead of the bottom/front.

Yes of course!

Thanks a lot for that, seems like I will get one as well!

BR

/Peter
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Offline AR1911

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Re: Micro DRO made from tyre tread depth gauge
« Reply #11 on: August 05, 2011, 06:06:29 PM »
I don't see those anywhere near that cheap on ebay at the moment. But I just got in 4 6" digital calipers for $5.99 each so I'll devote a couple of those to DRO duty.
I'll make one of these when I see them at a cheap price again.
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Offline John-Som

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Re: Micro DRO made from tyre tread depth gauge
« Reply #12 on: August 06, 2011, 01:42:37 AM »
Here in the UK prices on eBay currently range from £4.99 with free shipping to over £50.00 plus shipping from the more optimistic traders.

It's a neat idea and for those of us machining mainly in brass, aluminium and stainless the use of earth magnets shouldn't pose too much of a problem.

John-Som
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Offline Marauder

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Re: Micro DRO made from tyre tread depth gauge
« Reply #13 on: August 06, 2011, 03:35:09 AM »
Yea i have also just ordered one from EBay £5 inc P/P.Now i must look again and buy some of those magnets,,I was thinking of just araldite on the mags to the rear of it. (don't know if that's poss )Then installing the spring on the round probe with a collar on it close to the end.That way i don't have to open the thing up.Mind you when i receive it and give it the close inspection i may have to mod it like in the pics.
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Offline BillTodd

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Re: Micro DRO made from tyre tread depth gauge
« Reply #14 on: August 06, 2011, 08:11:58 AM »
Just a couple of words of warning about using magnets to fix things onto machine tools:

While they won't magnetise the iron, they will magnetise any steel swarf and dust, making it stick to the bed and a pain to clean off.

If you knock the magnetically attached thing while the machine is in operation, Sod's laws states that it'll be attracted to the the thing that'll cause the most harm (e.g. the chuck) .

Rigging these things with a clamp might be a better option.

Bill
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Offline DaveH

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Re: Micro DRO made from tyre tread depth gauge
« Reply #15 on: August 06, 2011, 12:33:39 PM »
Hi,

It also seems it could be used just as it is, ready, steady, go depth gauge especially on a mill when head room is a problem.
 :beer:
DaveH
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Offline Stilldrillin

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Re: Micro DRO made from tyre tread depth gauge
« Reply #16 on: August 06, 2011, 02:05:31 PM »
Mine arrived this morning!  :thumbup:

Rather stiff to slide, straight out of the pack. Easing now, as it is operated/ run in.......

David D
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Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Baldrocker

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Re: Micro DRO made from tyre tread depth gauge
« Reply #17 on: August 06, 2011, 08:06:46 PM »
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Offline dickda1

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Re: Micro DRO made from tyre tread depth gauge
« Reply #18 on: August 06, 2011, 11:38:52 PM »
Got a couple from ebay.  The slide is rather stiff - controlled by a leaf spring that can be bent a bit to adjust.  Thing I like about these is their fast display update.  Should make good carriage or cross slide guage.
-Dick
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Offline Corvus corax

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Re: Micro DRO made from tyre tread depth gauge
« Reply #19 on: August 07, 2011, 07:44:03 AM »
Quote from: Baldrocker on August 06, 2011, 08:06:46 PM
Just look at the rip off price on
EBay Australia
http://shop.ebay.com.au/?_from=R40&_trksid=p3907.m570.l1313&_nkw=%09+Digital+LCD+Tyre+Tread+Depth&_sacat=See-All-Categories

br

Wow.  :loco:
For those of you elsewhere that are having trouble finding them. Try here:
http://stores.ebay.com/Land-Mart
These guys operate out of Asia and will ship anywhere. I previously bought some digital indicators from them.

Question for those of you who have received yours. Is there an accessible data port, like on some of the cheap digital callipers?
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Offline mcr

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Re: Micro DRO made from tyre tread depth gauge
« Reply #20 on: August 07, 2011, 10:30:09 AM »
Yes
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Offline Stilldrillin

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Re: Micro DRO made from tyre tread depth gauge
« Reply #21 on: August 07, 2011, 10:53:27 AM »
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David.

Still drilling holes... Sometimes, in the right place!

Still modifying bits of metal... Occasionally, making an improvement!

Offline DaveH

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Re: Micro DRO made from tyre tread depth gauge
« Reply #22 on: August 07, 2011, 02:06:58 PM »
I've ordered a couple (never know I may break one) from Hong Kong.

Some Ebay UK sites don't ship to SA. (Misserable so & so's)

DaveH



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Offline andyf

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Re: Micro DRO made from tyre tread depth gauge
« Reply #23 on: August 07, 2011, 05:02:51 PM »
I've ordered one, with the idea of fitting it to the Z axis of my Dore Westbury mill.
No doubt I'll crick my neck reading it, but that's better than using the dial on a fine feed which shifts the quill 0.130" per revolution and often involves too much arithmetic.

Andy
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Offline doubleboost

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Re: Micro DRO made from tyre tread depth gauge
« Reply #24 on: August 07, 2011, 07:03:43 PM »
Mine came yesterday
Not bad for a fiver considering you can zero it and it goes both ways (metric imperial) :lol: :lol: :lol:
John
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