Scrap Yard Discussion Forums

Previous Thread
Next Thread
Print Thread
Page 3 of 7 1 2 3 4 5 6 7
Re: Pics of events in my garage... [Re: snotpig] #235900 07/31/08 05:26 PM
Joined: Feb 2007
Posts: 8,297
Rainwalker Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Feb 2007
Posts: 8,297
Nice work on the Machete, Mag. Try using some small files to enlarge your handle holes. That's what I usually do. You can usually get a whole set a Harbor Freight pretty cheep. Takes a little time to file the holes out, but since there going to be covered anyway, you don't have to worry about them being totally even.

I really like the Blade you made too!! Steel probably is a little questionable though. One suggestion, If you want to make a blade, replacement lawn mower blades are pretty cheap, and that's pretty decent knife Blade steel. <img src="/ubbthreads/images/graemlins/wink.gif" alt="" /> I've done that before, worked out pretty good.




Nice Forge SP, I've been planning on building a forge forever... still haven't gotten around to it though. <img src="/ubbthreads/images/graemlins/doh.gif" alt="" />


JYD#35 Dog Walkin in the Rain
Re: Pics of events in my garage... [Re: Rainwalker] #235901 07/31/08 05:44 PM
Joined: Dec 2006
Posts: 18,009
Magnum22 Offline OP
Junk Yard Dog
OP Offline
Junk Yard Dog
Joined: Dec 2006
Posts: 18,009
okay, twenty minutes on in total or twenty minutes after it's glowing?


JYD #7 Preserve the Yard.
Re: Pics of events in my garage... [Re: snotpig] #235902 07/31/08 06:27 PM
Joined: Oct 2007
Posts: 70
Stihlblade Offline
Pooch
Offline
Pooch
Joined: Oct 2007
Posts: 70
Quote
It may not harden well, but it may harden well enough.

You can buy quench oil, but you can also use water or any other oil. And since your'e not sure what type of steel it is, it may not hurt to try in on a few scrap pieces of the steel. After the quench, try to get a file to bite, and if it does, either the forge was not hot enough or the quench took too long. Just be careful with splatter, burning oil, and boiling oil.

Some only put the first 1/2" of the blade edge into the oil, but I quench the entire blade.

useless tip from watching mythbusters

they quenched hammers in used motor oil to add carbon thus making them harder or more brittle i forgot (beware the flaming motor oil)

Re: Pics of events in my garage... [Re: snotpig] #235903 07/31/08 08:08 PM
Joined: Dec 2007
Posts: 4,688
MRpink Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Dec 2007
Posts: 4,688
Very cool, I really like the knife you made. Something I really gotta try.


JYD #56 Scrap Yard Sword Club #00
Re: Pics of events in my garage... [Re: MRpink] #235904 07/31/08 09:10 PM
Joined: Sep 2007
Posts: 1,600
Sharp Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Sep 2007
Posts: 1,600
Hey Mag, Excellent job on the machete and knife

Might I suggest using a bit of foam for a handle mold on the machete. Shape it and then use the the plasti-dip?

You could make a pretty sweet shaped handle. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />


JYD #54 "Put your hands high, let your arms be the pillars that be holding up the sky..."
Re: Pics of events in my garage... [Re: Sharp] #235905 07/31/08 09:43 PM
Joined: Sep 2007
Posts: 2,869
eatingmuchface Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Sep 2007
Posts: 2,869
I've seen cord wraps plasti diped.
I would think that would give it some cushion, as well as some more grip.
<img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />


JYD number 52.
Re: Pics of events in my garage... [Re: eatingmuchface] #235906 07/31/08 10:03 PM
Joined: Feb 2007
Posts: 1,467
KnifeParty Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Feb 2007
Posts: 1,467
Awhile back i was looking at some " how to make a forge " instructions and noticed a lot of people use air mattress pumps as a way to keep there coals hot.


Junk Yard Dog #38

[P]ositive [E]nergy [A]lways [C]orrects [E]rrors
Re: Pics of events in my garage... [Re: KnifeParty] #235907 07/31/08 11:35 PM
Joined: Sep 2006
Posts: 7,208
Andy Wayne Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Sep 2006
Posts: 7,208
Quote
Please make a forge. If you do please include pics and instructions or steps you used.

This is something i have been wanting to get into for some time now. This could be the push that gets me into it.

I've posted some threads on the topic before. Do a search and you'll find 'em.


JYD #4
Re: Pics of events in my garage... [Re: KnifeParty] #235908 07/31/08 11:46 PM
Joined: Mar 2008
Posts: 2,374
snotpig Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Mar 2008
Posts: 2,374
Quote

okay, twenty minutes on in total or twenty minutes after it's glowing?



20 min at 1800F. You can pull it out sooner or leave it in longer. The longer you leave it in, the more sanding you'll have to do to get back to metal. The sooner you pull it out the less uniform the austenite (if this matters to you).

The advantage of having a temperature-controlled forge is the control of oxygen. In a temp controlled forge you can wrap the blade with a steel foil and basically eliminate the O2 near the blade. I suppose that you could do this with no temperature control, but having visibility of the blade color is key without having some type of temperature readout on the blade.

Crucible Steel has a website that has some basic numbers for heat treating their metals.


JYD #68
Re: Pics of events in my garage... [Re: snotpig] #235909 07/31/08 11:55 PM
Joined: Mar 2008
Posts: 2,374
snotpig Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Mar 2008
Posts: 2,374
Once quenched, you'll want to temper the blade. Right out of the quench bath, the steel is probably going to be very brittle. Let it cool until it's very warm to the touch, but cool enough to touch it and immediately put in in an kitchen oven (if you used motor oil, make sure all the oil is off the blade before putting t in the oven - courtesy of my wife).

I use 400F for A2 steel. I used 375 for the hacksaw blade since I didn't know what steel it was. I usually perform two cycles of an hour each and let it cool to room temperature after the first heat cycle before sticking it back in for the second. This tempering will give the blade "toughness" without sacrificing too much hardness. Again, tempering temperature is another variable that will (adversely or otherwise) affect the finished product.


JYD #68
Re: Pics of events in my garage... [Re: snotpig] #235910 08/01/08 12:19 AM
Joined: Jan 2007
Posts: 6,149
VANCE Offline
Junk Yard Dog
Offline
Junk Yard Dog
Joined: Jan 2007
Posts: 6,149
you gonna sell that mini ratweiler?


JYD #22
Always drink upstream from the herd.
-- Will Rogers
aka"LUCKY DOG"
Re: Pics of events in my garage... [Re: VANCE] #235911 08/01/08 03:28 AM
Joined: Dec 2006
Posts: 18,009
Magnum22 Offline OP
Junk Yard Dog
OP Offline
Junk Yard Dog
Joined: Dec 2006
Posts: 18,009
sell? first knife? it would go on the mantle if i had one.

i just spent the evening hardening this knife. jessica helped. the fire pit got it glowing red hot without forced air, those coals normally glow pretty bright orange. i left it in there about 25 minutes then quenched in ice water. it was pretty easy. never tempered it, but i don't mind if it's brittle. i'm doing this again for sure, i'll get it right next time.

thanks for all the advice, snotpig. way more help than the knifemakers' forum.


JYD #7 Preserve the Yard.
Page 3 of 7 1 2 3 4 5 6 7

Powered by UBB.threads™ PHP Forum Software 7.7.3