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View greglwood's profile

Self centering drill bits (VIX)

by greglwood
posted 02-27-2021 04:09 AM


22 replies so far

View LittleBlackDuck's profile

LittleBlackDuck

7076 posts in 1902 days


#1 posted 02-27-2021 04:29 AM

I’ve had a number of these genre type of gizmos… no idea what brand but I didn’t pay Fe$tool shekels for. I’ve never had the issue you’ve described… Occasionally I’ve had a spring jam, but that’s due to a build up of shavings.

Having said that, I dismantled one just to see how they are configured and find it hard to understand how the spring can jump… unless you went for the cheapest you could find. You get what you pay for.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View poopiekat's profile

poopiekat

4930 posts in 4815 days


#2 posted 02-27-2021 04:36 AM

Was your drill stuck in reverse when you used these bits?

-- Einstein: "The intuitive mind is a sacred gift, and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift." I'm Poopiekat!!

View SMP's profile

SMP

3968 posts in 986 days


#3 posted 02-27-2021 05:16 AM

I’ve used Insty-bits for decades and never had that problem. I also have a self centering punch that lets you use any drill bit.

View SawdustyDan's profile

SawdustyDan

73 posts in 2257 days


#4 posted 02-27-2021 01:54 PM

I have three sizes (#6/8/10) of self-centering bits I bought at Menard’s several years ago. I’ve drilled a bunch of holes with them and never had a problem.

Montana r Black Oxide brand – Now on sale for $8.00 each

-- Sawdusty Dan - Bellevue, NE - "Women and cats will do as they please. Men and dogs should just relax and get used to it." Robert A. Heinlein

View JIMMIEM's profile

JIMMIEM

204 posts in 1922 days


#5 posted 02-27-2021 02:05 PM

I have a set of Bosch self-centering bits that have worked well. I don’t remember what they cost. They have worked well and I would by Bosch again.

View splintergroup's profile

splintergroup

5111 posts in 2303 days


#6 posted 02-27-2021 03:52 PM

I have some cheap ones that don’t have the spring problem, but they tend to drill off-center. Another (brand unknown) old bit I have has never given me any issues.

I would assume as with any drills, the country of manufacture plays a big role in quality,

Here is some info that might help you out.

View Madmark2's profile

Madmark2

2648 posts in 1669 days


#7 posted 02-27-2021 04:15 PM

I bought a set of #4, #6, #8 bits years ago that work fine. Holes are centered, correct sized. Springs occassionally hang up with chips but a quick push and release usually clears them.


Still going strong after lots of use.

I think these were from Rockler.

-- The hump with the stump and the pump!

View greglwood's profile

greglwood

12 posts in 3754 days


#8 posted 02-27-2021 05:18 PM

I’m just curious for those who have not had any problems. In the lift time of the bit have you drilled a couple dozen holes or a couple hundred.

Also are you drilling the holes fland sinking screws or just starting the hole and finishing with another bit.

-- Greg, Tennessee, http://www.sawstopcentral.com

View Loren's profile

Loren

11192 posts in 4729 days


#9 posted 02-27-2021 05:22 PM

Mine are old Makitas and I’ve never had problems with them.

View Madmark2's profile

Madmark2

2648 posts in 1669 days


#10 posted 02-27-2021 05:37 PM

Hundreds.

They only go 3/8”-1/2” deep so if the screws are longer I follow with a longer pilot. I bought spare bits and sometimes use them to follow with. (Look close at the pic above and you can see the spare bits and allen wrenches.)

-- The hump with the stump and the pump!

View Fred Hargis's profile (online now)

Fred Hargis

6983 posts in 3574 days


#11 posted 02-27-2021 06:41 PM

Like Mark, I’ve probably did hundreds and if the screw is very long you almost have to drill the hole deeper. I had nothing but problems with the Asian knockoffs, life got much better after I bought a set made by Vix (the company).

-- Our village hasn't lost it's idiot, he was elected to congress.

View PurpLev's profile

PurpLev

8652 posts in 4729 days


#12 posted 02-27-2021 07:47 PM

I use a set from Rockler I got 10 years ago and still going strong. Like others the only thing I’ve encountered was spring lock due to dust/shavings that after a quick pull release clears


Also are you drilling the holes fland sinking screws or just starting the hole and finishing with another bit.

- greglwood

These bits are designed to follow a pre-drilled part to be attached to what it is that you are drilling and not really as a flat/countersunk starter hole, so in theory you should need to follow up with anything:

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Madmark2's profile

Madmark2

2648 posts in 1669 days


#13 posted 02-27-2021 08:17 PM

The middle hole is off-center to the right …

It also illustrates how to locate the knuckle—as was discussed in another thread.

-- The hump with the stump and the pump!

View LittleBlackDuck's profile

LittleBlackDuck

7076 posts in 1902 days


#14 posted 02-27-2021 10:21 PM



I’m just curious for those who have not had any problems. In the lift time of the bit have you drilled a couple dozen holes or a couple hundred.
- greglwood

Usually quality comes with price… If you’re going to drill hundreds of holes , I assume you are selling your work and should be able to afford a good set.

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Knockonit's profile

Knockonit

820 posts in 1283 days


#15 posted 02-27-2021 11:00 PM

we have used them for years before throwing out, hanging doors, you do the math, 8 screws per door, average of 3 hinges to door, its a whole lotta holes.
they do get dirty, gotta blowm out once in a while, like anything else, a little maintenance and walla longevity shows up
Rj in az

-- Living the dream

View LittleBlackDuck's profile

LittleBlackDuck

7076 posts in 1902 days


#16 posted 02-27-2021 11:12 PM


The middle hole is off-center to the right ...
- Madmark2

And for a right opening door, would you be drilling that middle hole in the wall?

-- If your first cut is too short... Take the second cut from the longer end... LBD

View Madmark2's profile

Madmark2

2648 posts in 1669 days


#17 posted 02-27-2021 11:20 PM

???

-- The hump with the stump and the pump!

View LittleBlackDuck's profile

LittleBlackDuck

7076 posts in 1902 days


#18 posted 02-28-2021 12:44 AM


???

- Madmark2


I had to think which way the door opens and if that off to the right was to the left or right… Hmm, now I’m also confused. Maybe I should stick to hanging windows (as capital punishments is banned)...

-- If your first cut is too short... Take the second cut from the longer end... LBD

View bandit571's profile

bandit571

28468 posts in 3764 days


#19 posted 02-28-2021 04:13 AM

Depends on one’s point of view…

-- A Planer? I'M the planer, this is what I use

View bandit571's profile

bandit571

28468 posts in 3764 days


#20 posted 02-28-2021 05:03 PM

and..

-- A Planer? I'M the planer, this is what I use

View tomsteve's profile

tomsteve

1162 posts in 2300 days


#21 posted 03-01-2021 12:59 PM



The middle hole is off-center to the right …

- Madmark2

seeing the top one is off center just a bit,too, im thinking the hinge moved a bit

View bandit571's profile

bandit571

28468 posts in 3764 days


#22 posted 03-01-2021 01:34 PM

Might just be an Optical Conclusion…..

-- A Planer? I'M the planer, this is what I use

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