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View Full Version : Best way to cut rebar?



Donn
05-24-2004, 08:40 AM
I have to cut several pieces of 1/2" rebar in half. Options available to me are:

Sawzall with metal cutting blade.
Orbital Jigsaw with metal cutting blade.
Disk grinder with cut-off wheel or diamond blade.
Dremel with cut-off wheel.
Multimaster with metal cutting blade.
Hacksaw.

The cuts need to be made at a 45 angle.

[ 05-24-2004, 09:02 AM: Message edited by: Donn ]

sbsbw
05-24-2004, 08:46 AM
I would recomend a circular saw with a abrasive cut off blade

Edit to add: if 45 degrees is nessasary, build a mitering jig

[ 05-24-2004, 08:50 AM: Message edited by: sbsbw ]

Donn
05-24-2004, 08:56 AM
sb...circular saw isn't on the list of available options. Exactly 45 isn't mandatory, but I'm driving the cut-offs into the ground, so any edge will do.

Pete Dorr
05-24-2004, 09:04 AM
Donn

If it's less than 5 cuts then just whip out the hacksaw. Else go with the jigsaw or sawzall (whichever you have metal blades for).

As for the angle - won't really matter much. If you hit rock a pointy 45 won't drive any better than a blunt 90.

I'd go with the hacksaw - super easy setup, no power required, cut out on the lawn where the shavings won't make rust spots in your shop.

[edited to add]
Some lumber yards have a rebar cutter so if you have not yet bought the rebar then check when you buy. Also, some yards have rebar cut to common lengths like for survey stakes.
Pete

[ 05-24-2004, 09:06 AM: Message edited by: Pete Dorr ]

cs
05-24-2004, 09:06 AM
Going with your list, side grinder with cut-off wheel.

Chad

sbsbw
05-24-2004, 09:10 AM
In that case i would definetly go with the sawzall with a metal blade, just make sure you have it clamped down well.

as Pete said with 1/2" the angle doesn't matter

essaunders
05-24-2004, 09:10 AM
Let's see, I've cut rebar with:
An Oxy-acetelene torch
A Hacksaw
An abrasive cutoff wheel
A rebar cutter (a big bolt cutter)
A sazall (I guess that should be counted as hacksaw)
saltwater corrosion (i guess I shouldn't really count that one)

But I agree, for just a few cuts, go hacksaw. If it is a few more, chuck up a hacksaw blade in a sawzall. The torch was probably the most fun, though.

Jack Heinlen
05-24-2004, 09:29 AM
If a few, a hacksaw, if many the grinder with a cut-off wheel, or one of the other power tools. Any would work, it's mild steel, but the jig saw or the sawsall just seem awkward. Be sure to wear eye protection if you use the grinder. And I don't see much point in cutting an angle either.

scepticus
05-24-2004, 09:51 AM
for me... if it's only one I grab the reciprocating saw (sawzall). If not many, I grab the cordless, else the corded one.

Ken Hutchins
05-24-2004, 10:13 AM
I got tired of using a hacksaw. :D
http://www.imagestation.com/picture/sraid99/p1cbda4bcb1bc398c5743d6bbe85bfff3/f9f26374.jpg
It is one of the most used tools in the shop.

raycon
05-24-2004, 10:50 AM
sawzall- It'll take you more time to clamp them in a vise then cut them -- if you have a metal cutting blade.

Jim H
05-24-2004, 10:54 AM
Donn, are you trying to tell us that you don't need a cutting torch? They do come in handy...

Alan D. Hyde
05-24-2004, 11:11 AM
What's wrong with a bolt cutter?

My three foot bolt cutter walks right thru rebar.

Simple, and easy... :D

Alan

NormMessinger
05-24-2004, 11:16 AM
A zip blade in the angle grinder or the cutting torch, anything that will make a lot of sparks. Isn't rebar a bit hard for a hack saw?

Paul Pless
05-24-2004, 11:24 AM
You could always do your best Superman impersonation and bend it back and forth till it breaks. If you go this route, I think some pictures of you in action will be most appropriate. :D

seriously,

angle grinder, bolt cutter is what I have used.

cs
05-24-2004, 01:24 PM
I still say that a side grinder (aka angle grinder) with a cut-off wheel is the quickest and easiest method.

That is if you can't get a hold of a chop saw with a fiber wheel.

Chad

Donn
05-24-2004, 01:26 PM
Thanks all. Alan, thanks for the reminder. The bolt cutter did just fine. :D Forgot I had one.

NormMessinger
05-24-2004, 02:25 PM
Oh sure. The bolt cutter would seperate a piece in to two but it don't make sparks.

cs
05-24-2004, 02:28 PM
Originally posted by NormMessinger:
Oh sure. The bolt cutter would seperate a piece in to two but it don't make sparks.and where has the fun gone? :(

Chad

Donn
05-24-2004, 02:39 PM
I was busily testing all the methods, when Alan reminded me I had a bolt cutter. The RA grinder with a cut-off disk sent up a fearsome shower of sparks....all over my heating fuel tank. :eek: I know ignition was unlikely, but I stopped.

Alan D. Hyde
05-24-2004, 02:47 PM
The main reason for owning bolt cutters is to avoid BS.

Ever noticed how little ancillary piddly stuff can add tremendously to the time needed to complete a job???

I like to just cut the thing, and then get on with the job. :D

Alan

cs
05-24-2004, 02:48 PM
Originally posted by Donn:
fearsome shower of sparks....all over my heating fuel tank. :eek: That's when the fun really starts!
:D

Chad

edsr
05-28-2004, 11:51 AM
Don - Donn - Donn - You missed a golden opportunity to,"invest",(term used to inform wife), that you NEED this new tool. Check-out Harbor Freight when they have a sale on 12" or 14" cut-off machines - under $60.00. They cut quickly and you can entertain the grand kids with a great shower of sparks.

Yeah, I know, bolt cutters - quicker, easier, and more convenient - spoil sport.
edsr

DugT
05-29-2004, 11:26 AM
No offense, but it seems to me that in the time it took to type your question, you could've used any one of the options you listed to cut the rebar. How did people ever get by before the internet? :rolleyes: