My ship came in

Forum for Maintenance and Repair topics. Feel free to ask questions or contribute.

Moderator: admin

Post Reply
User avatar
JPG
Platinum Member
Posts: 35430
Joined: Wed Dec 10, 2008 7:42 pm
Location: Lexington, Ky (TAMECAT territory)

Post by JPG »

fiatben wrote:Recommended procedure?? I can see putting it in a vise and ending up over-correcting or ending up with a wavy bar. Been looking for a replacement on evil-bay but too much moolah for my resources.

Yes that can happen!:( That is more likely with items that have been 'bent' rather than 'sprung', the difference being the extremeness of the kink. A bent part has acquired 'work hardening' and will bend more easily out of that work hardened area. I doubt the miter bar is 'bent'.

A careful location of the bar in a vise(so that the unbending stress is concentrated in the kink area and application of that stress so as to not apply it elsewhere. A pipe slipped over the end opposite the vise can be positioned to control the stress location.

Finally only try to 'bring it back to straight' a small amount at a time. That allows you go adjust the points of application of the stress. Do not expect 'perfection'!
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Top
User avatar
fiatben
Platinum Member
Posts: 736
Joined: Mon Mar 08, 2010 11:39 pm
Location: northwest Arkansas

Meanwhile, back to this biscuit joiner thingy

Post by fiatben »

OK, my biscuit joiner is missing:
pin
pin setscrew
housing collar capscrew
I'm thinking I can make something to function as the pin, and the setscrew is a standard setscrew.
Does anyone know what size the housing collar capscrew is?
'55 Greenie #292284 (Mar-55), '89 SS 510 #020989, Mark VII #408551 (sold 10/14/12), SS Band Saw, (SS 500 #36063 (May-79) now gone to son-in-law as of 11-11), Magna bandsaw, Magna jointer 16185 (May-54), Magna belt sander SS28712 (Dec-82), Magna jigsaw SS4397 (Dec-78), SS biscuit joiner, Zyliss (knockoff) vise, 20+ hand planes, 60s Craftsman tablesaw, CarbaTec mini-lathe, and the usual pile of tools. Hermit of the Hills Woodworks, a hillbilly in the foothills of the Ozarks, scraping by.
Top
User avatar
fiatben
Platinum Member
Posts: 736
Joined: Mon Mar 08, 2010 11:39 pm
Location: northwest Arkansas

and another thing

Post by fiatben »

One of the headless stop screws in themiter gauge's protractor is REALLY stuck. I've soaked it with penetrating oil and still no go. It is so stuck that trying to turn it is not only spreading the screw's slot but actually shearing the thing.

Now what?
'55 Greenie #292284 (Mar-55), '89 SS 510 #020989, Mark VII #408551 (sold 10/14/12), SS Band Saw, (SS 500 #36063 (May-79) now gone to son-in-law as of 11-11), Magna bandsaw, Magna jointer 16185 (May-54), Magna belt sander SS28712 (Dec-82), Magna jigsaw SS4397 (Dec-78), SS biscuit joiner, Zyliss (knockoff) vise, 20+ hand planes, 60s Craftsman tablesaw, CarbaTec mini-lathe, and the usual pile of tools. Hermit of the Hills Woodworks, a hillbilly in the foothills of the Ozarks, scraping by.
Top
User avatar
beeg
Platinum Member
Posts: 4791
Joined: Sun Oct 14, 2007 2:33 pm
Location: St. Louis,Mo.

Post by beeg »

TRY a little heat on it.
SS 500(09/1980), DC3300, jointer, bandsaw, belt sander, Strip Sander, drum sanders,molder, dado, biscuit joiner, universal lathe tool rest, Oneway talon chuck, router bits & chucks and a De Walt 735 planer,a #5,#6, block planes. ALL in a 100 square foot shop.
.
.
Bob
Top
User avatar
SDSSmith
Platinum Member
Posts: 1940
Joined: Mon Dec 04, 2006 6:35 pm
Location: San Diego, CA

Post by SDSSmith »

http://en.wikipedia.org/wiki/Work_hardening
JPG40504 wrote:Yes that can happen!:( That is more likely with items that have been 'bent' rather than 'sprung', the difference being the extremeness of the kink. A bent part has acquired 'work hardening' and will bend more easily out of that work hardened area. I doubt the miter bar is 'bent'.

A careful location of the bar in a vise(so that the unbending stress is concentrated in the kink area and application of that stress so as to not apply it elsewhere. A pipe slipped over the end opposite the vise can be positioned to control the stress location.

Finally only try to 'bring it back to straight' a small amount at a time. That allows you go adjust the points of application of the stress. Do not expect 'perfection'!
Wow!!! Work hardened??? On the miter gauge bar???I have been out of school for a while so maybe I have forgotten these "technical" terms from my engineering studies.Seems to me that we used a term called "yield". But then again, I am not an electrical engineer.:D
Rob in San Diego
Email: SDSSmith51 AT gmail.com
Top
User avatar
JPG
Platinum Member
Posts: 35430
Joined: Wed Dec 10, 2008 7:42 pm
Location: Lexington, Ky (TAMECAT territory)

Post by JPG »

SDSSmith wrote:http://en.wikipedia.org/wiki/Work_hardeningWow!!! Work hardened??? On the miter gauge bar???I have been out of school for a while so maybe I have forgotten these "technical" terms from my engineering studies.Seems to me that we used a term called "yield". But then again, I am not an electrical engineer.:D
That too(but that is on the bend it in the first place sequence of events).;)

But then maybe my 'ME' vocabulary is lacking!:eek:

I agree yield is a better 'distinction'(I think(?)) but FGS educate us all!!!;)
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Top
User avatar
SDSSmith
Platinum Member
Posts: 1940
Joined: Mon Dec 04, 2006 6:35 pm
Location: San Diego, CA

Post by SDSSmith »

[quote="JPG40504"]That too(but that is on the bend it in the first place sequence of events).]You are the "educator"!;) The wiki link I included in my last post provide more information on work hardening.
Rob in San Diego
Email: SDSSmith51 AT gmail.com
Top
User avatar
JPG
Platinum Member
Posts: 35430
Joined: Wed Dec 10, 2008 7:42 pm
Location: Lexington, Ky (TAMECAT territory)

Post by JPG »

SDSSmith wrote:You are the "educator"!]
OK! After all we ARE supposed to be DIY folks!;):D
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Top
User avatar
JPG
Platinum Member
Posts: 35430
Joined: Wed Dec 10, 2008 7:42 pm
Location: Lexington, Ky (TAMECAT territory)

Post by JPG »

OK so sprung is the result of low stress magnitude force applied at widely distributed locations causing plastic deformation just beyond the elastic limit(yield point) and bent is the result of more localized deformation at a stress magnitude greatly exceeding the elastic limit which results in crystal lattice deformation SIMILAR to that created by repeated plastic flow.

Close enough???
╔═══╗
╟JPG ╢
╚═══╝

Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Top
User avatar
fiatben
Platinum Member
Posts: 736
Joined: Mon Mar 08, 2010 11:39 pm
Location: northwest Arkansas

Good grief!!

Post by fiatben »

JPG40504 wrote:OK so sprung is the result of low stress magnitude force applied at widely distributed locations causing plastic deformation just beyond the elastic limit(yield point) and bent is the result of more localized deformation at a stress magnitude greatly exceeding the elastic limit which results in crystal lattice deformation SIMILAR to that created by repeated plastic flow.

Close enough???

Ya know, all I wanted to know was how to fix it easy.... sheesh!! :p

You guys crack me up!!! I guess that's why I hang around here so much...
'55 Greenie #292284 (Mar-55), '89 SS 510 #020989, Mark VII #408551 (sold 10/14/12), SS Band Saw, (SS 500 #36063 (May-79) now gone to son-in-law as of 11-11), Magna bandsaw, Magna jointer 16185 (May-54), Magna belt sander SS28712 (Dec-82), Magna jigsaw SS4397 (Dec-78), SS biscuit joiner, Zyliss (knockoff) vise, 20+ hand planes, 60s Craftsman tablesaw, CarbaTec mini-lathe, and the usual pile of tools. Hermit of the Hills Woodworks, a hillbilly in the foothills of the Ozarks, scraping by.
Top
Post Reply

Return to “Maintenance and Repair”