Author Topic: Centrotec-ing standard bits  (Read 2676 times)

0 Members and 1 Guest are viewing this topic.

Offline Richard/RMW

  • Retailer
  • *
  • Posts: 1684
Centrotec-ing standard bits
« on: August 12, 2017, 02:09 PM »
Some things are so simple they plumb evade me...

Love the little TXS and Centrotec in general but I've been frustrated by the lack of available bits which has kept me from plunging further into the depths of Festool drills. Then I stumbled across this video:



Before/After:



Tested this first on a #2 square bit using the drill press and then ordered a set of DW countersinks to convert. With the little Taig lathe, Foredom w/ carbide burr, flat file and chainsaw file they took a few minutes each after working out the wrinkles.







Found another video by Paul-Marcel after the fact.



Enjoy.

RMW

 
   
As of 10/17 I am out of the Dog business and pursuing other distractions. Thanks for a fun ride!

Festool USA does not pre-approve the contents of this website nor endorse the application or use of any Festool product in any way other than in the manner described in the Festool Instruction Manual. To reduce the risk of serious injury and/or damage to your Festool product, always read, understand and follow all warnings and instructions in your Festool product's Instruction Manual. Although Festool strives for accuracy in the website material, the website may contain inaccuracies. Festool makes no representations about the accuracy, reliability, completeness or timeliness of the material on this website or about the results to be obtained from using the website. Festool and its affiliates cannot be responsible for improper postings or your reliance on the website's material. Your use of any material contained on this website is entirely at your own risk. The content contained on this site is provided for informational purposes only and does not constitute professional advice.


Online Cheese

  • Posts: 3614
Re: Centrotec-ing standard bits
« Reply #1 on: August 13, 2017, 12:59 AM »
Just a can-do addition to this thread...I Centrotec'ed a set of Milwaukee titanium coated drill bits about a year ago. It's easily done with a lathe and some extra time, it took maybe an hour to complete the job. [cool]

Offline Naildrivingman

  • Posts: 352
Re: Centrotec-ing standard bits
« Reply #2 on: August 13, 2017, 05:58 AM »
I'm a wood guy first and foremost, so I'm now stepping in to the deep end.

If one were to do this on hardened steel, doesn't even that little bit of material removal for the secondary detent compromise the bit's strength?  If so, it's probably not a big deal when drilling wood; but if true, I imagine it would be when resistance is higher such as drilling steel or driving hardware.

I guess my mind tells me that altering hardened steel (post hardening) is like trying to cut tempered glass (post tempering).

Just thinkin, not sayin...
« Last Edit: August 13, 2017, 06:04 AM by Naildrivingman »
Dance with who brung ya...

Offline Scorpion

  • Posts: 514
Re: Centrotec-ing standard bits
« Reply #3 on: August 13, 2017, 09:34 PM »
Was wrapping up in the shop and my lathe caught my attention...why not.  So the file knocking down the hex edge was easy.  I used a full length hex but (like the one on the left) and cut off the detent using a cutoff wheel.  Then used the city off wheel to make the detent relief.  Took maybe 5 minutes total.  Works like a champ.




Sent from my iPhone using Tapatalk Pro

Offline ben_r_

  • Posts: 796
Re: Centrotec-ing standard bits
« Reply #4 on: August 14, 2017, 01:09 PM »
Yep, if Festool would just make a head for each of their drills that would accept standard 1/4" standard bits Id switch out all my DeWalt drills to Festool.
If at first you don't succeed, redefine success!

Offline Bob D.

  • Posts: 663
Re: Centrotec-ing standard bits
« Reply #5 on: August 14, 2017, 05:16 PM »
Yep, if Festool would just make a head for each of their drills that would accept standard 1/4" standard bits Id switch out all my DeWalt drills to Festool.

Do you mean something like a Centrotec chuck but for standard 1/4" hex bits?
That would be great.
-----
It's a table saw, do you know where your fingers are?

Offline CADru

  • Posts: 40
Re: Centrotec-ing standard bits
« Reply #6 on: August 14, 2017, 07:05 PM »
Yep, if Festool would just make a head for each of their drills that would accept standard 1/4" standard bits Id switch out all my DeWalt drills to Festool.

Do you mean something like a Centrotec chuck but for standard 1/4" hex bits?
That would be great.
Yeah, that would be great! If I'm reading you guys right here's my work around from Snappy. Sorta like having a second chuck on the drill, a bit bulky but works

Offline Scorpion

  • Posts: 514
Re: Centrotec-ing standard bits
« Reply #7 on: August 14, 2017, 11:35 PM »
Yep, if Festool would just make a head for each of their drills that would accept standard 1/4" standard bits Id switch out all my DeWalt drills to Festool.

Do you mean something like a Centrotec chuck but for standard 1/4" hex bits?
That would be great.
Yeah, that would be great! If I'm reading you guys right here's my work around from Snappy. Sorta like having a second chuck on the drill, a bit bulky but works

Would be so simple to make a different chuck (differing only in where the detent is) for the Festool drills.  Such an accessory is a no brainer $25 part/accessory.


Sent from my iPhone using Tapatalk Pro

Offline Samo

  • Posts: 536
Re: Centrotec-ing standard bits
« Reply #8 on: August 15, 2017, 01:24 AM »
  [bite tongue]

"Would be so simple to make a different chuck (differing only in where the detent is) for the Festool drills.  Such an accessory is a no brainer $25 part/accessory."

                                        [dead horse]

Offline Euclid

  • Posts: 101
Re: Centrotec-ing standard bits
« Reply #9 on: August 15, 2017, 03:33 AM »
But you'd then lose the really big, attractive feature of Centrotec: that the bit is driven by the output spindle (shaft) of the drill motor; that's only made possible by the detent being further along the shank.

It would need more than just the ball-and-detent in different place; it needs to grip the bit rotationally too, like a hybrid of the Snappy chuck (that CADru mentioned) and have something to both lock on like a Centrotec chuck and engage with the drill motor (a function normally fulfilled by the Centrotec bit) - but then you'd lose 'compactness' too (the second big C'tec attribute). I suspect there would be a rather greater propensity for 'slop' in such a system too.

Mind you, I only really use Centrotec or traditional plain-shanked bits (I never got into the generic quick-change format), so the Jacobs chuck is usually enough for me. YMMV!
« Last Edit: August 15, 2017, 04:09 AM by Euclid »

Offline Scorpion

  • Posts: 514
Re: Centrotec-ing standard bits
« Reply #10 on: August 15, 2017, 06:35 AM »
  [bite tongue]

"Would be so simple to make a different chuck (differing only in where the detent is) for the Festool drills.  Such an accessory is a no brainer $25 part/accessory."

                                        [dead horse]

Yeah, yeah.  I got there organically after fabbin a bit.  Let my mind finish it's business and I'll move on. 

Offline Scorpion

  • Posts: 514
Re: Centrotec-ing standard bits
« Reply #11 on: August 15, 2017, 06:44 AM »
But you'd then lose the really big, attractive feature of Centrotec: that the bit is driven by the output spindle (shaft) of the drill motor; that's only made possible by the detent being further along the shank.

It would need more than just the ball-and-detent in different place; it needs to grip the bit rotationally too, like a hybrid of the Snappy chuck (that CADru mentioned) and have something to both lock on like a Centrotec chuck and engage with the drill motor (a function normally fulfilled by the Centrotec bit) - but then you'd lose 'compactness' too (the second big C'tec attribute). I suspect there would be a rather greater propensity for 'slop' in such a system too.

Mind you, I only really use Centrotec or traditional plain-shanked bits (I never got into the generic quick-change format), so the Jacobs chuck is usually enough for me. YMMV!

Think I'm the opposite.  I have about a half dozen Dewalt impacts that have been with me for years.  A few (retired now) are 20 yrs old?  Anyway, piles of bits follow that legacy.  Added festool drills around a year ago so I'm occasionally using a Jacobs instead of a quick change which ticks me off (not really, just sayin).  I'll adapt over time it might just take me a while.  Modifying bits here and there might help the time pass.


Sent from my iPhone using Tapatalk Pro

Offline HarveyWildes

  • Posts: 580
Re: Centrotec-ing standard bits
« Reply #12 on: August 15, 2017, 09:30 AM »
...
"Would be so simple to make a different chuck (differing only in where the detent is) for the Festool drills.  Such an accessory is a no brainer $25 part/accessory."
...

$25 is the adaptor from Snappy.  A Festool chuck would be more like $60-$110.  Aside from that, you're right on.  I just sold a C18, and the absence of the chuck you're proposing had a lot to do with it.  I just kept reaching for my Milwaukee 12V when the C18 was right there, because it was easier to chuck the bits.  I can't justify $500+ if I keep reaching for the other tool.  So I sold it and bought a TS55 instead.

Maybe if I had seen this thread first...


Offline Richard/RMW

  • Retailer
  • *
  • Posts: 1684
Re: Centrotec-ing standard bits
« Reply #13 on: August 15, 2017, 10:36 AM »
...
"Would be so simple to make a different chuck (differing only in where the detent is) for the Festool drills.  Such an accessory is a no brainer $25 part/accessory."
...

$25 is the adaptor from Snappy.  A Festool chuck would be more like $60-$110.  Aside from that, you're right on.  I just sold a C18, and the absence of the chuck you're proposing had a lot to do with it.  I just kept reaching for my Milwaukee 12V when the C18 was right there, because it was easier to chuck the bits.  I can't justify $500+ if I keep reaching for the other tool.  So I sold it and bought a TS55 instead.

Maybe if I had seen this thread first...

That is exactly what has kept me from plunging into the C18 or PDC, as I have both the 18V DeWalt and 12V Milwaukee. I really want to love/use Centrotec, but the options are too limited. Hence, DIY Centrotec.

Before long I am going to be forced to upgrade the DW 18V. Newest batteries I have are 2013 vintage non-LI. I've been tempted to convert to DW 20V and get a battery adapter to keep using the 18V tools I have. Then I trip over the Centrotec installer kit and other bits and my mind goes into a tail spin again.

Dagnabbit. Spit. Sigh.

RMW

As of 10/17 I am out of the Dog business and pursuing other distractions. Thanks for a fun ride!

Offline Euclid

  • Posts: 101
Re: Centrotec-ing standard bits
« Reply #14 on: August 15, 2017, 12:09 PM »
I guess I'm luckier than most. I only had a very small inventory of regular quick-change detent bits (and in the past never really had much need for powered screwdriving) so when I needed to replace drills I went for a CXS and a DR18 - without the 'legacy' issues that many of you face.
I do have a fairly large inventory of drill bits in sizes and forms that (so far as I know) are not easily available in a hex-shank style of any sort, but of course that's what the Jacobs is for...

Offline Dick Mahany

  • Posts: 107
Re: Centrotec-ing standard bits
« Reply #15 on: August 18, 2017, 07:51 PM »
Many thanks to those who contributed this thread.  I just took delivery of my first Festool drill/driver T18, and was pondering how I could adapt the more readily available and less costly hex shank drills, to my new centrotec chuck.  The suggestions and ideas here, were a tremendous help !  The timing couldn't have been better.

I'm fortunate enough to have an old Chinese mini lathe and I think the money I saved on conversions paid for that little lathe  [big grin]

Offline RobBob

  • Posts: 1165
Re: Centrotec-ing standard bits
« Reply #16 on: August 19, 2017, 02:47 PM »
I wish the Festool Centrotec bits included detents for standard 1/4" ball bearing and wire bit holding devices.  I know the Festool Centrotec 100mm bits are not impact rated, but it would be nice if they could be used in standard impact driver chucks.  For most uses, I think they would be plenty durable enough.
« Last Edit: August 20, 2017, 09:33 PM by RobBob »