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Small-bore boring!

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  • Member since
    May 2020
  • From: North East of England
Small-bore boring!
Posted by Hutch6390 on Sunday, July 19, 2020 3:38 PM

About a year ago I bought a no-name brand mini drill, and a set of drill bits ranging in size from 0.2mm - 2.5mm.  The drill works fine with bits larger than 1mm but smaller bits just aren't gripped in the jaws of the chuck & tend to stop as soon as they bite, while the chuck & the body of the drill rotate around them to no effect -  exasperating!  The drill bits themselves are fine & work well (the ones I can use, anyway!)

Can anyone recommend a manually operated i.e. non-powered mini drill/pin vice that can reliably be used with sub-1mm bits?  I no longer have the dexterity needed to twiddle these things with my fingers.

Thanks, and stay safe,

                               Hutch.

Vell, Zaphod's just zis guy, you know?

  • Member since
    December 2002
  • From: Bury St Edmunds, Suffolk, England
Posted by Bish on Sunday, July 19, 2020 3:50 PM

Have you tried PCB drill bits. They all have the same diamete shaft so the drill grips them better. I switched to them after getting frustrated with similar problems to what your having.

''I am a Norfolk man and i glory in being so''

On the bench: Revell 1/72nd Type VIIc U-Boat

  • Member since
    May 2020
  • From: North East of England
Posted by Hutch6390 on Sunday, July 19, 2020 4:06 PM

Thanks, mate, sounds like just the thing - shopping pages, here I come!

Vell, Zaphod's just zis guy, you know?

  • Member since
    December 2002
  • From: Bury St Edmunds, Suffolk, England
Posted by Bish on Monday, July 20, 2020 3:23 AM

I get mine off e-bay from China, a set of 10 of the same size costs a couple of quid. But things from over there are taking longer at the moment. You can get them in the UK but they are more pricey.

''I am a Norfolk man and i glory in being so''

On the bench: Revell 1/72nd Type VIIc U-Boat

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Monday, July 20, 2020 1:30 PM

I use the X-acto pin vise for the really small bits.  I have a set of other pin vises, indeed the smallest one does not hold the smallest- smaller than about 72 or 73.  I also like the X-acto one because it has a swivel knob on top which is easier on the palm of my hand.

Only thing I do not like about the X-acto one is that the chuck has a threaded aluminum cap running on the threaded threaded body, and I know that aluminum threads running against other aluminum threads will eventually cause problems.

Don Stauffer in Minnesota

  • Member since
    June 2020
Posted by Markeno on Monday, July 20, 2020 8:51 PM

I have issues with my pinvice and some of the bits.  When I have that issue I often turn to picking up an old drill chuck that my Grandfather had salvaged somewhere.  It is not as easy as a pinvise to balance or see around, but you can hold it easily.  I don't knot that it can use the smallest bits. It is not quite your typical chuck, being of a smaller than typical size, but not super small.

I do though have the "pcb" machining bits, that are wide on the base, and a narrow bit on the end.  I don't use them that much.

The modern chucks I think of are the Dremel Keyless Chuck.  Which I have on one of my Dremels and on a Walmart rechargable Dremel.  They close down nearly completely.  You can buy similar ones that end in a 1/4" adapter, which could be held again with likely being a bit more difficult to balance in a way than a pin vice.  Then again you could also but it into one of the 1/4" screwdriver handles.

  • Member since
    May 2020
  • From: North East of England
Posted by Hutch6390 on Wednesday, July 22, 2020 4:16 PM

Thanks, Don, and Markeno - I jumped onto the internet & bought a new set of PCB bits, which come with a new pin vice & 20 or so ordinary bits in small sizes.  Some of these will duplicate ones I already have, but for £10.99 I'm not complaining.  The pin vice itself is made of aluminium and has a 3-jaw chuck, which seems better than the steel one I had the problem with.  But, Don, I think you're right about the screw mechanism - we'll see how long it lasts.

Thanks again, everyone, hopefully my problem is now solved.

Stay safe,

             Hutch.

Vell, Zaphod's just zis guy, you know?

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Wednesday, July 22, 2020 4:46 PM

Pin vice quality matters. All I use these days are the Tamiya ones, which are the best I've found so far. But they are not cheap.

 

-Greg

  • Member since
    January 2020
Posted by Space Ranger on Thursday, July 23, 2020 5:50 AM

This topic is boring. 

  • Member since
    May 2020
  • From: North East of England
Posted by Hutch6390 on Thursday, July 23, 2020 7:08 AM

And yet, to the point.

Vell, Zaphod's just zis guy, you know?

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Thursday, July 23, 2020 9:00 AM

I am tired of buying those junk ones with the blue and transparent plastic case.  I have been shopping for others.  Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?  I think the brand may be Gyro.

 

Don Stauffer in Minnesota

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Thursday, July 23, 2020 9:26 AM

Don Stauffer
Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?

Yes, I have had that set for years, but have never opened it because my drills don't break. My guess is they are junk too. "How does that help?", thinks Don? It doesn't, but hopefully this will.

https://www.micromark.com/20-piece-Micro-Size-Drill-Bit-Set-with-Index-61-80

I've had mine for so long I'm not going to tell you becuase nobody will believe it. I think, but am not sure if this set from Micromark is the same. I got mine from an industrial supply cutting tools supply house back in the day when you and I were still in the biz. I noticed the same-looking set at MicroMark and recently bought another for a backup with a recent Micromark order. I haven't tried a bit yet, but everything looks identical to the old reliable set.

 

 

-Greg

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Thursday, July 23, 2020 9:34 AM

Space Ranger

This topic is boring. 

 

Took long enough, but this and the "to the point" response finally kicked in. Ha! Big Smile

Hey, I haven't had even one sip of coffee yet, ok? Brain is still at idle.

 

-Greg

  • Member since
    September 2006
  • From: Bethlehem PA
Posted by the Baron on Thursday, July 23, 2020 12:08 PM

He's to be commended for trying to overcome his vices.

The bigger the government, the smaller the citizen.

 

 

  • Member since
    July 2003
  • From: NEVER USE PHOTO BUCKET - IT'S A THREAD WRECKER.
Posted by disastermaster on Thursday, July 23, 2020 1:20 PM

 Space Ranger

This topic is boring. 

That's about the hole point of this drill.

https://i.imgur.com/Gcc59Dk.png

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Friday, July 24, 2020 12:43 PM

Greg

 

 
Don Stauffer
Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?

 

Yes, I have had that set for years, but have never opened it because my drills don't break. My guess is they are junk too. "How does that help?", thinks Don? It doesn't, but hopefully this will.

https://www.micromark.com/20-piece-Micro-Size-Drill-Bit-Set-with-Index-61-80

I've had mine for so long I'm not going to tell you becuase nobody will believe it. I think, but am not sure if this set from Micromark is the same. I got mine from an industrial supply cutting tools supply house back in the day when you and I were still in the biz. I noticed the same-looking set at MicroMark and recently bought another for a backup with a recent Micromark order. I haven't tried a bit yet, but everything looks identical to the old reliable set.

 

 

 

Greg

 

 
Don Stauffer
Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?

 

Yes, I have had that set for years, but have never opened it because my drills don't break. My guess is they are junk too. "How does that help?", thinks Don? It doesn't, but hopefully this will.

https://www.micromark.com/20-piece-Micro-Size-Drill-Bit-Set-with-Index-61-80

I've had mine for so long I'm not going to tell you becuase nobody will believe it. I think, but am not sure if this set from Micromark is the same. I got mine from an industrial supply cutting tools supply house back in the day when you and I were still in the biz. I noticed the same-looking set at MicroMark and recently bought another for a backup with a recent Micromark order. I haven't tried a bit yet, but everything looks identical to the old reliable set.

 

 

 

Maybe I will try those again.  Bought a set many years ago and the points were okay, but they did break easily.  I have learned tricks to reduce breaking now.  Problem I am having with the blue box set is crappy points.  The point is not concentric, and different angles on the side of the flute.

Don Stauffer in Minnesota

  • Member since
    March 2015
  • From: Close to Chicago
Posted by JohnnyK on Friday, July 24, 2020 4:23 PM

Don Stauffer

I am tired of buying those junk ones with the blue and transparent plastic case.  I have been shopping for others.  Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?  I think the brand may be Gyro.

 

 

Keep in mind that these are inexpensive drill bits and their quality is not that good. . It is really easy to break the smaller diameter bits. All the bits tend to dull quickly. 

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Saturday, July 25, 2020 7:00 AM

JohnnyK

 

 
Don Stauffer

I am tired of buying those junk ones with the blue and transparent plastic case.  I have been shopping for others.  Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?  I think the brand may be Gyro.

 

 

 

 

Keep in mind that these are inexpensive drill bits and their quality is not that good. . It is really easy to break the smaller diameter bits. All the bits tend to dull quickly. 

 

 

Where do I get high quality ones?  I have been thinking of MaMaster Carr- any other suggestions?

Don Stauffer in Minnesota

  • Member since
    May 2013
  • From: Indiana, USA
Posted by Greg on Saturday, July 25, 2020 9:56 AM

Yes, a machine tool supplier would be your safest bet, as I alluded to, but not very clearly.

McMaster Carr, yes. Or Grainger

https://www.grainger.com/search/machining/drilling-and-holemaking/drill-bits/metalworking-drill-bits/micro-drill-bits/metalworking-micro-drill-bits#WP11525565

Or a trip to your local machine tool supplier, if you have one.

The index box set I have was purchased by a tooling buyer a long, long time ago. That's why I can't say which place it came from as I never knew to begin with. I wish I did.

-Greg

  • Member since
    April 2016
Posted by GlennH on Friday, July 31, 2020 9:05 AM

Don Stauffer

I am tired of buying those junk ones with the blue and transparent plastic case.  I have been shopping for others.  Has anyone tried the set that comes in a circular case, drills arrayed in a circle, with a clear plastic cover dome?  I think the brand may be Gyro.

Yes indeed. Well sharpened and when I emailed that one was missing they mailed out a package of two the next day.

A number Army Viet Nam scans from hundreds yet to be done:

https://www.flickr.com/photos/southwestdreams/albums/72157621855914355

Have had the great fortune to be on every side of the howitzers.

  • Member since
    July 2020
  • From: New England
Posted by Lone Traveler on Saturday, August 1, 2020 9:00 AM

I got one of the cheap sets from amazon. Promptly broke two bits using them by hand withou a vice. Trying to drill a/c exhaust ports.  Plan to check out some of the more expensive ones mentioned here. YGWYPF

 

https://www.amazon.com/10Pcs-Print-Circuit-Board-Carbide/dp/B00IMXHXGG

Thanks

Lonnie

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