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Trying to cut bike frames ( for physically impaired person ) ? Answered


Hello once again,

I've sorta been sneaking around trying to decide what the best way to go about trying to cut ( basically a bike frame ) without doing it manaually and = or spending too much cash I dont have.

Welders look like they'd require a high skill level to hold and I cant really hold- or in fact even BE near things- that causes high or noticable rpm , so the hacksaw doesnt seem too great an idea either .

But what i was thinking ,was that I could use some of sort of clamp set up so that I didnt have to hold the hacksaw while cutting the frame ( its really a knee walker frame )

If this seems like a good idea or  any one has any other suggestions or ideas that might allow me to do this  , i really appreciate your opnion on the best way I should go.

thanks

hele

Discussions

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heleNachoMahma

Reply 7 years ago

Yes, thats what Ive been doing but I dont really see anything for the size I want other than something like this , which unfortuntely is only for copper / plumbing.

http://www.amazon.com/Milwaukee-2471-21-12-Volt-Copper-Tubing/dp/B001FB64N0/ref=sr_1_9?ie=UTF8&qid=1288608511&sr=8-9

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NachoMahmahele

Reply 7 years ago

.  Ridgid makes units designed for pipe. See if they have what you want/need.

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heleNachoMahma

Reply 7 years ago

Thanks NM ,

I will ask on the forum there , maybe someone there will have some other suggestions too ?

hele

P.S . What is CU tubing ?

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NachoMahmahele

Reply 7 years ago

> What is CU tubing ?
. Cu = Copper

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NachoMahmaNachoMahma

Reply 7 years ago

. PS: A unit designed for Cu tubing should work with thin-wall Al pipe. They are both soft metals.

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crapflinger

7 years ago

you could make a "cable saw" (http://www.google.com/products?rlz=1T5GGLL_enUS323US278&q=cable+saw&um=1&ie=UTF-8&sa=N&hl=en&tab=wf first few hits there), basically it's a loop of abrasive cable that you pull back and forth around an object until it cuts through, though, you'd have to find something to cut through metal as most of the ones i see are for wood or PVC, then you could either set up a motor/pulley assembly to pull the cable back and forth.

of course, going that route, you could also make a simple machine that would push a normal hacksaw back and forth across whatever you're going to cut (basically use an electric motor with a wheel that has an offset attachment for an arm to make a piston go back and forth like a locomotive wheel/piston type thing). set it up, turn it on, and walk away (or put a remote switch)

they also have automated pipe cutting band saws that you just set up and press go on then walk away. they're designed for thick metal, or really thick pipe, and they're pretty damned expensive

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helecrapflinger

Reply 7 years ago

Yes, getting blade might not be so hard but the simple building of the machine would unless I has something to follow .

It would be cheaper though - no doubt , but is there any thing like this thats been done on here to use as reference ?

thanks

hele

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hele

7 years ago

Thanks for your replies .

I can imagine my knee walker is thicker than 5mm ( i estimate maybe 2- 3 ) but hard to tell, so the pipe cleaner would be great - but maybe something I would need eletric if it requires a lot of strength ?

To caitlinsdad

Why would riggin up a powertool be a bad ideas i..e if it was resonably small / portable ?

Would the vibrations make it come lose , become hazard ( sry i am complete newbie when it comes to this )

hele

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caitlinsdadhele

Reply 7 years ago

I don't know your situation but is this a one time thing or do you intend to maybe do more repairs or craft projects where you require a specialized setup? Some of the slower power saws like a jigsaw might be adapted. A dremel has a rapid spinning cutter disk that is handheld in operation. So it is an investment cost in getting the tool if you do not have it and getting the parts to adapt it for safe use. A jigsaw riding in a jig to cut the tubing that is clamped in place might work.


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helecaitlinsdad

Reply 7 years ago

I would to do more , do other projects but Id settle for one time thing - it makes me wonder if its something I could even hire out ?

The tube i want to cut is actually quite small its just my hands / arms are so bad I wouldnt like to risk it manually.

The tube I want to cut is prob only 10 mm in diameter and 2- 3 mm thick

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caitlinsdadhele

Reply 7 years ago

Hopefully, there is someone around that you can just ask to help you out. It's not worth it to risk injury from tools. Get it cut and move on with your project.

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CameronSS

7 years ago

If it's just thin-wall tubing, have you considered using a pipe cutter? It still requires holding the tubing in someway, but they're quite controllable and leave a nice clean cut (no sharp edges or metal dust.) Harbor Freight has a medium-sized model for $15, but even that's big for cutting an aluminum walker frame, it wouldn't surprise me if you can get an even smaller/cheaper model at a big-box store.

Hope this helps.

pipe-cutter.jpg
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caitlinsdad

7 years ago

I don't know if that knee walker frame is thin-walled similar to "crutches" as opposed to thin-walled tubing that is much thicker used in say wheelchairs. If you just need a few cuts, maybe you can kindly ask someone at a hardware store or plumbling supply to use one of their pipe/tubing cutters to cut it. Anybody working on their car in the driveway would be happy to hack a frame apart. Rigging up a power tool is never a good idea. Good luck.