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Thread: Drill Bits 1-13mm 0.1 steps
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17th Apr 2019, 09:18 PM #16Golden Member
- Join Date
- Nov 2010
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- Gippsland Victoria
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- 733
Matching drills and taps and 0.1mm drill sets
Could you buy a set of matching drills and taps at the local hardware shops in Perth ...... I've got M3 to M12 matching taps, dies and drills from a local hardware place.
How about bang good or amazon or ebay
0.1mmIncrement Drills
I see these combined drills and taps on ebay/amazon/banggood etc but have never used them.
DrillAndTap
I have used a tap in a pistol drill and on my mill in aluminium and thin sheet metal and cannot see why these gadgets wouldnt work. Anybody used them ?
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17th Apr 2019, 10:24 PM #17Novice
- Join Date
- Aug 2018
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- Australia, Perth WA.
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- 15
Thanks
Guys,
Thanks for the great advice please keep it coming, There is so much experience here it just bubbles.
Grahame, thanks for the welcome and great Idea, I like the idea of building up a set for tapping only. I just tried to price up a pair of each size you mentioned on McJing but alas their sizes are not consistent. Will try other outlets.
There is a large set of drills on ebay https://www.ebay.com.au/itm/115pc-Ti...e/261661128527 But been advised to stay away from Chinese Butter.
I think I'll also take snapatap's advice and Others and save some $$ just going for a 1-6 or Numbered set 1-60 from McJing. and then get a regular 0.5mm steps for the larger sizes.
I'm sure everybody here knows the frustration of having many drills but not the one you want at the time.
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21st Apr 2019, 04:10 PM #18Most Valued Member
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- Nov 2007
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- melbourne australia
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- 3,228
I agree with those suggesting you just buy the sizes you need for the taps. Otherwise you might end up with a lot of unused drill bits. You'll also blunt and/or break the commonly used bits which leaves you with 'holes' in your set. My taps are mostly in sets of 3, so I attach the appropriate sized drill bit to the tap set with a rubber band. They live in a drawer.
Chris
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22nd Apr 2019, 12:38 PM #19Most Valued Member
- Join Date
- Apr 2012
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- Healesville
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- 2,129
I you are still interested there is this https://assetplant.com.au/product/cu...n-metal-box-2/
If you were going to buy it you would want to ring them first to make sure it is in stock, i pushed the buy button on one of these some time back and after a few months of emails and phone calls i swapped the order for a couple of digital internal mic's (plus a few more bucks).
cheers, shed
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22nd Apr 2019, 02:15 PM #20Member: Blue and white apron brigade
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 7,189
I've found multiple uses for 0.1mm bits so reckon that a even cheap set is worth it.
Yes the common used ones in cheap sets eventually snap (even good quality ones will do this) but I replace these with better quality
I have already mentioned being able to fenage the hole size for taps in thicker/tougher thinner/softer material but here are a couple of more uses
Holes for Tek screws in sheet thicker than usual.
If I try using the nearest 1/2 mm drill smaller I usually end up snapping the head of the screw, while with a 1/2mm bigger size I end up with a weak fit.
I measure the ID of the screw with callipers and drill a hole the next 0.1 or 0.2mm size larger, a practice run gets the best/tightest possible fit.
The hole for the OD of the thread can also be more closely matched
Fitting/aligning holes - also mentioned by WCD
Sometimes when drilling holes that are supposed to align with threaded holes they don't quite do that. Using the next 0.5 mm bit amy be excessive and I find I can get an alignment with using slightly larger bit sizes. The alternative is a round file - I've done that a lot. I reckon this is probably probably my greatest use of unusual 0.1mm size bits. For a precise fit many M size screws will also fit in holes drilled by an M-0.1 bit so for and M6 screw a 5.9 mm hole will often provide a more precise fit.
Looking at holes around around a specific size eg 6mm, for M6 screws I typically have used bit sizes between 6.3 - 6.0 mm for M6 screws, while for their threaded holes I have used between 5.4 to 5.1 mm bits. For 1/4" WW screws I have used 6.5 - 6.2 mm, while for their threaded holes I might use between 5.5 and 5.2 mm.
Then there's the odd "Fine" thread hole that may require something unusual.
I reckon in the 10 years or so I've had then there would be less than half a dozen bits in my 0.1 mm sets that have not found a use for. As usual If I did not have these on hand it would be likely I would have an immediate use for them.
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22nd Apr 2019, 09:58 PM #21
Hi all. On the strength of this thread, I asked my Chinese friend Felix Mu (M&G Productions) if he has any sets or can source good quality ones. He is currently in China looking after his manufacturing business. He said the market seems too small for 0.1mm step sets, but he does carry imperial sets with number drills (HSS 115 PCS FULLY GROUND DRILL SET 135°POINT TIN COATED METAL BOX WITH BLACK COLOR_Cutting Tools_M&G Productions) that he tells me are really good quality.
He carries my "Joe Blocks" (12-sided ER self-indexing milling and grinding blocks) in both ER32 and ER40 - in case you haven't come across them yet....
And the disclosure: I get royalty fees from the sale of these.Cheers, Joe
retired - less energy, more time to contemplate projects and more shed time....
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