welding on tools, sorta

[supermanotorious]

snapped my dang ol band saw blade, first one since learning how to TIG so I thought I'd try to fix it

the weld went really smooth, no filler rod

but the blade snapped again in the heat signature, oh well I have more blades

 

[Bbqjoe]

Hey, nice try though!

 

[Whitetrashrocker]

Blades are here to weld. I've seen it done though.
Try less heat next time? I dunno.

 

[supermanotorious]

probably needed to heat the entire blade before welding so it could cool as a whole, I learned about that with chromoly in TIG class

 

[Poboy kartman]

snapped my dang ol band saw blade, first one since learning how to TIG so I thought I'd try to fix it

the weld went really smooth, no filler rod

but the blade snapped again in the heat signature, oh well I have more blades

You got a lot of fingers, too... Just be careful. I'm not really concerned about your fingers , but a flailing bandsaw blade, that might take out your jugular, and no...thats not a circus clown.

What's funny is....is in jr. High school , in shop class, a guy cut off his finger. SERIOUSLY!!! How frigging stupid do you have to be be to cut off a finger on a BANDSAW?

Just goes to prove, you can't legislate away stupidly!

 

[mckutzy]

I think you might need to copper back the blade before you weld... itll wick the excess heat away... and not back into the blade.....

I would also suggest trying to have a flat edge to butt autogenous weld.

If anything maybe look into brazing....you have a TIG.... just not so hot to melt the base.....

 

[ML-TOYS]

Butt the 2 ends together and preheat with a torch, then weld using some rod if needed.
At my sheetmetal shop the bandsaw had its own welder built in. You would clamp 2 sides then bring them together. Push button and would heat slow them real quick turned red and joined the 2 sides.

 

[mckutzy]

Mine too... our bandsaw had one in it aswell...

 

[Kartorbust]

I'd probably trust a new blade over welding one. Just my thoughts.

 

[Whitetrashrocker]

How do you think they made it in the first place.???

 

[Randy H]

I'd try to anneal it. I've welded oven bands in a large scale bakery. Sugar wafers. Anyways I used Oxy acetylene. The oven band was preheated to about 400 degrees. Operating temp, during production break time. I would make the weld using filler. Then heat a spot cherry red and bash it with a hammer, using punches and chisels to duplicate the sugar wafer pattern. Couldn't grind, because grinding dust and sugar wafers aren't very tasty. This is for fixing cracks.

Used a similar procedure on new bands. 24" wide 1/16 thick. Cracks would usually develop in areas other than welds. The ideas is to not quench and temper prehear and cool slow.

P.S. There was a large diameter wire brush at the end of these ovens. One night a real pretty boy with hair down to his buttocks, managed to get it stuck in this wire brush, trapping his head and face against the 400 degree band. I had to remove the brush while he was screaming and his flesh was cooking. Paramedics had to remove a large portion of his scalp. He lived. I had nightmares for weeks.

 

[Whitetrashrocker]

Oh man.

Always pay attention! Tie hair and clothing back.

 

[Kartorbust]

How do you think they made it in the first place.???

Meant rewelded. Unless reheat treated, it would be more of a liability for an untrained person. Much safer to buy new than risk one's health over a potential mistake.

 

[Rail rider]

Don't throw the old blade away. Cut it into hacksaw blade lengths and punch holes in it. Reduce, reuse, recycle .. When I kill a chicken I only lose the cluck.

 

[supermanotorious]

cutting a cutting blade? am i dreaming in a dream?

 

[chancer]

Yes. Use your ban saw to cut the blade into usable lengths. Oh wait, that is the ban saw Blade!
Conundrum...
Dreaming in a dream! LOL

 

[Rail rider]

How do you think they made it in the first place.???

They took a piece of 4" pipe 1/2" thick and forged it down to a 1/16" × 5' loop and let gophers gnaw on it to make the teeth... Am I close

---------- Post added at 03:01 AM ---------- Previous post was at 02:56 AM ----------

Oh man.

Always pay attention! Tie hair and clothing back.

Remember kids ...Scarfs on go karts look really cool

---------- Post added at 03:05 AM ---------- Previous post was at 03:01 AM ----------

Yes. Use your ban saw to cut the blade into usable lengths. Oh wait, that is the ban saw Blade!
Conundrum...
Dreaming in a dream! LOL

TIN SNIPS AND A HARBOR FREIGHT PUNCH SET.... YOU KNOW YOU HAVE ONE. But its much like the high carbon spring steel used for the pull starter...we've all had to phuk with them trying to rebend that little hook

---------- Post added at 03:12 AM ---------- Previous post was at 03:05 AM ----------

cutting a cutting blade? am i dreaming in a dream?

You're not dreaming... A 7-1/4" skill saw blade makes for a nifty ula/elk skinning tool. You just need to cut and grind the parts that aren't a skinning knife. BTW A railroad tie can make a nice Lil .25 derringer .. JUST REMOVE THE PARTS THAT ARENT A DERRINGER . your brain is stuck in the box....FREE IT

 

[pRoFiT]

No fingers in my shop class, unless you count my teacher. I think most shop teachers have missing fingers. We did have a guy get his hair caught in the grinder. yup a guy with long hair. Took a piece of his scalp with it! Thing shot up like a rocket into his head. Knocked him out cold. That's when i started tying my hair back.

 

[supermanotorious]

No fingers in my shop class, unless you count my teacher. I think most shop teachers have missing fingers. We did have a guy get his hair caught in the grinder. yup a guy with long hair. Took a piece of his scalp with it! Thing shot up like a rocket into his head. Knocked him out cold. That's when i started tying my hair back.

dang, your shop teacher should have required hair back to begin with

 

[pRoFiT]

dang, your shop teacher should have required hair back to begin with

Well he did mention it several times before the incident. Some kids just get lazy. but maybe one kid needs to get maimed before everyone starts to listen to the warnings

It's like the saying play with fire and you will get burned. I'm sure we have all played with fire and have all got burned. We dont listen!