Recent Topics
Drive In Movies
by 53' Stude - 09/15/19 08:49 AM
Oil/Gas prices gonna go up?
by Mad_Hatter - 09/15/19 08:10 AM
Ordering parts
by tiger862 - 09/15/19 07:44 AM
Shell conventional @ Menards. $1.99
by Kruse - 09/15/19 07:33 AM
How do I update my profile?
by ernied - 09/15/19 07:07 AM
Most dangerous job ever?
by Mad_Hatter - 09/15/19 07:06 AM
04 Grand Marquis
by mrjlube - 09/15/19 07:01 AM
Engine burning oil
by Espada - 09/15/19 06:49 AM
Walmart near me do not sell havoline oil
by MetalSlug - 09/15/19 04:11 AM
Wanted: Inexpensive car
by FirstNissan - 09/15/19 02:53 AM
Do all replacement LED headlight bulbs suck?
by Nick1994 - 09/15/19 12:56 AM
5 qt Chevron Supreme 5w-30 for $12.42 @ walmart.com
by gallydif - 09/15/19 12:03 AM
how effective is spray scotchgard?
by WhyMe - 09/14/19 11:39 PM
Want opinion of disc brake pad wear
by boulderdentist - 09/14/19 11:08 PM
Mercedes’ dealer oil filter panel/board
by SlavaB - 09/14/19 11:08 PM
Mercedes damage code
by SlavaB - 09/14/19 11:00 PM
Restoring the paint on the Crown Vic
by Colt45ws - 09/14/19 10:39 PM
Hyundai Ioniq
by WhyMe - 09/14/19 10:08 PM
Grooves in windshield due to wiper blades
by dx92beater - 09/14/19 09:43 PM
Newest Members
KevATL, DragSGT, Gbenitez, DoctorPc, FarmerDan
69277 Registered Users
Who's Online Now
97 registered members (53' Stude, atikovi, Amenhotep, 08z06, ARCOgraphite, aleneros, 8 invisible), 1,641 guests, and 22 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics294,563
Posts5,062,455
Members69,277
Most Online3,532
Jul 30th, 2019
Donate to BITOG
Print Thread
Hop To
Page 1 of 2 1 2
Seized set screw removal #4585603 11/26/17 02:17 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
On 1920s-ish hardware on a same age door.

Knobs were loose, but set screw was stuck. Someone long ago already stripped the screw thread, so Ive tried to remove it.

Kroil, ATF, etc don't help. I assume there's a combo of human oils, chemical bonding, etc.

Going to break the extractor if I try any harder.

So what's next??



Re: Siezed set screw removal [Re: JHZR2] #4585608 11/26/17 02:21 PM
Joined: Sep 2005
Posts: 6,617
W
Warstud Offline
Offline
W
Joined: Sep 2005
Posts: 6,617
Drill it out.

Re: Siezed set screw removal [Re: JHZR2] #4585626 11/26/17 02:38 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
Pardon my ignorance, isn't that what I did?

I used a #2 extractor with a hole pre drilled. Used a slightly undersized hole so the extractor had more bite and less chance to bottom out.

A shallow extractor bites but distorts the brass around the screw vs removing it. Ask how I know frown

New set screw will be 1/4-20, are you implying to just drill and tap as is?

Re: Siezed set screw removal [Re: Warstud] #4585633 11/26/17 02:46 PM
Joined: Jul 2016
Posts: 1,948
F
FlyNavyP3 Offline
Offline
F
Joined: Jul 2016
Posts: 1,948
Originally Posted By: Warstud
Drill it out.


I agree.

To answer your follow on question I think what Warstud was saying and what I'm suggesting is to drill the set screw in your drill press as you end already done for the tap drill size for the size of the set screw, then tap and use a new set screw. No need to go over size from original, just make new threads.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Siezed set screw removal [Re: JHZR2] #4585640 11/26/17 02:50 PM
Joined: Jan 2007
Posts: 17,501
M
Merkava_4 Offline
Offline
M
Joined: Jan 2007
Posts: 17,501
That's the wrong kind of extractor. What those kind do is exert outward force on the fastener as you turn it to the left. Counterproductive is the word I use to describe those kind of extractors.

Re: Siezed set screw removal [Re: JHZR2] #4585643 11/26/17 02:52 PM
Joined: Sep 2004
Posts: 8,428
A
andyd Offline
Offline
A
Joined: Sep 2004
Posts: 8,428
Back that extractor out before it snaps. Continue to drill going up in size gradually until there is no screw left. Then tap, I would use the smallest over size possible. a 10-32, 12-24 3/16? I'm surprised you don't have a set of left hand bits. Not that I've had any success with my LH index grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Siezed set screw removal [Re: JHZR2] #4585673 11/26/17 03:21 PM
Joined: Jan 2003
Posts: 3,203
R
Rick in PA Offline
Offline
R
Joined: Jan 2003
Posts: 3,203
I'd keep up-sizing the drills gradually. If you get lucky, the threads on the old set screw can be picked out like a spring. I've seen it done. Then clean up the threads on the door knob with a tap of the same size threads and you're good-to-go.

That was a popular style door knob. We have the same ones in our house.

Last edited by Rick in PA; 11/26/17 03:23 PM.

A wise man told me:
"Heat is your friend." and "Any oil is better than no oil."
Re: Siezed set screw removal [Re: Merkava_4] #4585689 11/26/17 03:47 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
Originally Posted By: Merkava_4
That's the wrong kind of extractor. What those kind do is exert outward force on the fastener as you turn it to the left. Counterproductive is the word I use to describe those kind of extractors.


Yup, observed that, though from one of the "seen on tv" types HD sells. Thought a more aggressive taper (get fatter in shorter distance) was good given that I can't get the rod out.

The brass gave easily as a result.

So what is the better kind of extractor. For me and for this sort of a job I certainly don't mind paying good money upfront to have the right tool and do a proper job with minimal hang ups.

I like DIY and on Sunday my time isn't money, but I don't care to waste my day if there's a better tool.

Re: Siezed set screw removal [Re: andyd] #4585692 11/26/17 03:48 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
Originally Posted By: andyd
Back that extractor out before it snaps. Continue to drill going up in size gradually until there is no screw left. Then tap, I would use the smallest over size possible. a 10-32, 12-24 3/16? I'm surprised you don't have a set of left hand bits. Not that I've had any success with my LH index grin2


Don't have left hand bits. But then again, my 1950s dp is one way only smile

Re: Siezed set screw removal [Re: Rick in PA] #4585725 11/26/17 04:08 PM
Joined: Dec 2016
Posts: 9,425
L
Linctex Online Content
Online Content
L
Joined: Dec 2016
Posts: 9,425
Originally Posted By: Rick in PA
I'd keep up-sizing the drills gradually. If you get lucky, the threads on the old set screw can be picked out like a spring. I've seen it done.


Exactly - it just takes time, precision.... and a LOT of patience.

It saves the original threads.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Siezed set screw removal [Re: JHZR2] #4585729 11/26/17 04:10 PM
Joined: Dec 2016
Posts: 9,425
L
Linctex Online Content
Online Content
L
Joined: Dec 2016
Posts: 9,425
Originally Posted By: JHZR2

So what is the better kind of extractor. For me and for this sort of a job I certainly don't mind paying good money upfront to have the right tool and do a proper job


this kind:



"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Siezed set screw removal [Re: JHZR2] #4585746 11/26/17 04:26 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
Is there a name for those?

Even snap on seems to be selling spiral/multi-spline types.

Re: Siezed set screw removal [Re: JHZR2] #4585865 11/26/17 05:46 PM
Joined: Dec 2002
Posts: 43,080
J
JHZR2 Offline OP
Global Moderator
OP Offline
Global Moderator
J
Joined: Dec 2002
Posts: 43,080
Drilled out to #7 then tapped to 1/4-20. Success.

It was crooked, not sure how I could do that better - I was a bit sensitive to clamping the handle in a vice.



Re: Siezed set screw removal [Re: JHZR2] #4585891 11/26/17 06:03 PM
Joined: Mar 2015
Posts: 13,494
53' Stude Online Content
Online Content
Joined: Mar 2015
Posts: 13,494
Very nice work and fix sir smile



Re: Siezed set screw removal [Re: JHZR2] #4585892 11/26/17 06:05 PM
Joined: May 2010
Posts: 10,457
S
spasm3 Online Happy
Online Happy
S
Joined: May 2010
Posts: 10,457
Nice work! I would not have clamped it in a vise either. Crooked won't matter for that, with the set screw in, you will never know.


13 elantra 78k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 12300 miles m1 0w30
Page 1 of 2 1 2
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™