Tools & Fabrication - Mandrel Tube Bender??




View Full Version : Mandrel Tube Bender??


MetallicaMatt
01-28-2007, 11:51 AM
He guys, I want to get a Mandrel Tubing Bender to do some exhaust work, for 2-3" O.D. tubing. I was wondering if there is a manual one out there, instead of spending a ton of cash on a hydraulic unit?

anybody have one or tips?


wkdivr
01-28-2007, 12:16 PM
ANY type of mandrel bender is BIG bucks! For exhaust, maybe look into buying a box of mandrel bent pieces. There's some on e-bay, and other places. Good luck.

MetallicaMatt
01-28-2007, 12:21 PM
yeah I've been looking at the powered mandrel benders and they cost a ton. I was hoping to find a manual one for a decent price

So far I've been buying the boxes of mandrel bent pieces and cut and weld them together...getting a little tired of that!


Armageddon
01-28-2007, 02:15 PM
Dude... mandrels are $. Fill the pipe your bending with white sand and weld caps on the ends... It'll bend just like mandrel. Especially if it's just for a one time deal.

Armageddon
01-28-2007, 02:46 PM
Actually I just researched it more. You don't have to weld the ends at all. Pack the sand and tape the ends.

MetallicaMatt
01-28-2007, 03:01 PM
so I can use a regular pipe bender like I could buy at my tractor supply store? those are only $300 or something for one to do one up to 3"

Armageddon
01-28-2007, 04:23 PM
Absolutely. Get on google and search pipe bending with white sand. They use this technique when bending PVC pipe. The same principle is used with metal... The sand wont compress which makes mandrel quality bends.

good luck

Notime383
01-28-2007, 04:57 PM
Use to cost about 50K now you can have a decent one for as low as 15-20K, hyd of course!

MetallicaMatt
01-28-2007, 05:12 PM
thanks man, i'll have to look that up

how accurate are the manual benders? i'm assuming they have some sort of degree markings on them so if I wanted to create bends of the same design over and over, i could

Armageddon
01-28-2007, 05:28 PM
Extremely accurate. As far as I'm concerned a mandrel bender serves it's purpose in mass production and pure luxury for people who don't want to go through with the technique I've introduced you to. All a mandrel machine does is slide a precision die down the tube and extracts it at precise speeds.

MetallicaMatt
01-28-2007, 05:32 PM
i'm trying to find a place to get one that'll do 3" tube, having some trouble, i'm going to look through my MSC magazine

Armageddon
01-28-2007, 05:38 PM
Just find a good hydraulic foundation. Then get the size Dies you need. 3" is a popular diameter.

Speed
01-28-2007, 06:06 PM
Dude... mandrels are $. Fill the pipe your bending with white sand and weld caps on the ends... It'll bend just like mandrel. Especially if it's just for a one time deal.

+1

...

MetallicaMatt
01-28-2007, 06:06 PM
i can't find crap

any links for me?

I can't believe just filling it with sand is all it takes?! but awesome

618HAWK
01-30-2007, 09:41 AM
Pm sent with a good link.........

Chirs

ghettocruiser
01-30-2007, 11:04 AM
Chris,
Mind sending me the "good link" as well? Thanks!!

I want to try the sand method. The thing I cant get over with mandrel benders isnt really the bender cost...its the cost of the friggin dies. But I guess thats the important part of the mechanism so I can understand I guess.

Justin

MetallicaMatt
01-30-2007, 11:51 AM
You guys need to do some better research... I use a bender made by Mittler Bros. and yeah it is expensive but no even close to the figures mentioned... Maybe a CNC mandrel bender.... It will do anything you have dies for dom 4130 square tube...


i went to their website, and their 180* hydraulic bender only does 2" OD....that doesn't work when i'm using 2.5" and 3"

unless i'm looking in the wrong place...whata you have and how much did it set ya back?

MetallicaMatt
01-30-2007, 02:32 PM
http://vansantent.com/tube_bending_machines/Huth_bending_machines.htm

almost $8,000 for one to do 3"!

I still can't find a manual one that will do 3" so I can do the white sand method....

Miter Brothers only went up to 2" as far as I can tell...

BringIt10s
01-30-2007, 02:37 PM
http://vansantent.com/tube_bending_machines/Huth_bending_machines.htm

almost $8,000 for one to do 3"!

I still can't find a manual one that will do 3" so I can do the white sand method....

Miter Brothers only went up to 2" as far as I can tell...

Thats a press bender.. not a Mandrel

Armageddon
01-30-2007, 03:17 PM
http://www2.northerntool.com/product-1/628.htm

first link that came up on google...

MetallicaMatt
01-30-2007, 03:48 PM
http://www2.northerntool.com/product-1/628.htm

first link that came up on google...
Note: Will not bend conduit or exhaust.

i saw that in my catalog, got excited but then saw the note on the exhaust :(

Armageddon
01-30-2007, 06:11 PM
crap, I thought those did.

Wnts2Go10O
01-30-2007, 08:16 PM
http://www.ercolina-usa.com/mandrel-bender.htm zingo..doubt ull put down the coin to get one though

MetallicaMatt
01-30-2007, 08:38 PM
yeah prolly 40-50k

CTSmechanic
01-31-2007, 09:14 AM
i went to their website, and their 180* hydraulic bender only does 2" OD....that doesn't work when i'm using 2.5" and 3"

unless i'm looking in the wrong place...whata you have and how much did it set ya back?
I had a brain fart on this deal.... those wont work for exhaust and not a mandrel bender but a damn good tubing bender for everything else...

VinR1
01-31-2007, 03:02 PM
assuming you filled the pipe with sand, why wouldnt the Northern Tool model work?

MetallicaMatt
01-31-2007, 03:39 PM
maybe it would work if the tube was filled with sand...hurm

Armageddon
01-31-2007, 04:08 PM
That's what I was thinking after you said no exhaust. That's the purpose the sand serves is to simulate a solid tube. Just make sure it's packed tight with no air pockets.

MetallicaMatt
01-31-2007, 04:11 PM
that one from northern tool doesn't have any kind of angle markings on it.

I don't understand why i can't find the lever style hand bender, I haven't found one that goes above 2"....

this is getting to be a PITA

mitchntx
01-31-2007, 05:46 PM
I bought the Model 3 tubing bender for $300 to fabricate roll cages.

www.jd2.com

It only goes up to 2" pipe. Might be worth a call to see if they have anything to accept tubing as large as exhaust tubing.

jester1
02-06-2007, 09:20 PM
unfortunatly they dont,
good decent bender my neighbour just bought one, make sure the dies are good though. If the pipe is thin walled it does kink the first portion where its clamped but it might be the die it self doing that.

NWDragRacer
02-06-2007, 09:41 PM
http://www2.northerntool.com/product-1/628.htm

first link that came up on google...

That's a PIPE bender - much different than a TUBING bender.

Pipe is measured ID and tubing is measured OD.

ROCNDAV
03-26-2007, 06:09 PM
Matt, did you ever get any more info?

I was looking at this guy

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=35336 ($199), but I occasionally get 15% coupons via email.

You can download the manual from their site: http://www.harborfreight.com/manuals/35000-35999/35336.PDF

Page 4 of the manual reads:
The pipe bender is designed to bend water pipe and heavy gauge galvanized pipe that is used in commercial applications. When bending thin-walled pipe eg conduit etc, you may have problems with the pipe becoming kinked or creased. To limit the amount of creasing, fill the pipe with sand and cap teh ends before bending.
file:///C:/DOCUME%7E1/dmcafee/LOCALS%7E1/Temp/moz-screenshot.jpg

I remember seeing mandrel balls on ebay before as well. You can put some of them in the pipe before a bend as well as the sand.

MetallicaMatt
03-27-2007, 04:04 PM
i don't really want to have to fill everything with sand

i guess i'm just going to bite the bullet and fab up what i have and go to stainless works

badtexasZ28
03-29-2007, 02:06 PM
www.tubeshark.com

ROCNDAV
03-29-2007, 02:29 PM
www.tubeshark.com (http://www.tubeshark.com)

Looks good, but it looks like it only goes up to 2". THere is an option for a 3" die, but I don't see anything else about it.

MetallicaMatt
03-29-2007, 04:52 PM
I contacted them a couple weeks ago

only goes to 2", and the 3" wont be out for another year

ROCNDAV
03-29-2007, 05:01 PM
at my rate, I might still be buildig my car, so it might work for me. :)

RiceKilla
04-04-2007, 02:56 PM
Make sure before you pack the sand in the tube, to bake it and get rid of all the moisture. I wouldn't want to be there if you have to heat the pipe to bend it, and there's moisture, POP!

Also, Jeg's sells them for pretty cheap and they get to your house in 2 days.

ROCNDAV
04-04-2007, 03:45 PM
Make sure before you pack the sand in the tube, to bake it and get rid of all the moisture. I wouldn't want to be there if you have to heat the pipe to bend it, and there's moisture, POP!

Also, Jeg's sells them for pretty cheap and they get to your house in 2 days.

Jegs sell the benders? or the pre bent pieces?

How the heck would you cap a pipe and fill it? plumbing rubber cap? or actually weld it closed? thats a lot of work for each bend.

JPMuscle
04-04-2007, 03:52 PM
wait, how the hell do you bend pvc without heat. Filled with sand or not its brittle.

ROCNDAV
04-04-2007, 04:10 PM
PVC? Aren't we talking about Exhaust tubing? :jest:

MetallicaMatt
04-04-2007, 04:12 PM
they sell just the bends

i live 1 hour from summit, so thats where i get all my stuff

and yes the sand thing would be a lot of work, so i'm not goina do it lol

JPMuscle
04-04-2007, 04:26 PM
PVC? Aren't we talking about Exhaust tubing? :jest:


yea but somebody mentioned bending PVC pipe earlier in the thread.

Stampede4ever
04-04-2007, 07:33 PM
I'm in the process of machining some dies for my bender. I have already machined 1.75", 1.875", 2.25", 2.5", and soon a 1.625", 2.0" and a 3.0" dies.
I bought a pipe bender of E-bay, but I didn't get what I ordered, so I had to machine what I wanted, which is fine, because the dies that came with the bender have a big radius.

Thanks.

MetallicaMatt
04-08-2007, 10:57 AM
I think i just spend a good 45-60 minutes on google trying to find someone who built their own mandrel tubing bender...for exhaust, 3"

The machines aren't that complicated, i dont see why someone hasn't built their own, or sells directions to make one.

I contacted Stainless Works to have my parts re-done as mandrel and they are 4-6 weeks behind. And this is just a mock up! for a much stuff as i'm going to be doing, i really want a bender, but $40k+ is not worth it

Stampede4ever
04-09-2007, 10:58 AM
Thanks for the idea.

Thanks.

Beaflag VonRathburg
04-25-2007, 11:38 PM
www.tubeshark.com

Sorry to necropost.

That was on trucks a really long long time ago. I remember seeing it.

What about bending oval tubing?

NassyVette
05-01-2007, 12:54 PM
Looks like this one would work if filled with sand. No price listed but it doesn't look very expensive. http://www.americasprideonline.com/benders/ampro/APH100.shtml

Edit: Faq page http://www.americasprideonline.com/pipe-benders.shtml

Beaflag VonRathburg
05-01-2007, 05:27 PM
Looks like this one would work if filled with sand. No price listed but it doesn't look very expensive. http://www.americasprideonline.com/benders/ampro/APH100.shtml

Edit: Faq page http://www.americasprideonline.com/pipe-benders.shtml

That doesn't seem like that bad of a price. Especially when you compare it to others that cost 10-15 times more.