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Posted by howy on February 28, 2006, 4:36 pm
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Hello,
I have noticed some cheap sheet metal bending brakes for less than $200
floating around. Does anyone have any advice/experience with cheap (a
few hundred bucks) tools for cutting and bending sheet aluminum (less
than 0.25inch thick)?
And also how about cheap prototype quantity shops that can do this sort
of thing?
thanks,
-howy
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Posted by Matthias Melcher on February 28, 2006, 4:52 pm
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howy wrote:
> Hello,
>
> I have noticed some cheap sheet metal bending brakes for less than $200
> floating around. Does anyone have any advice/experience with cheap (a
> few hundred bucks) tools for cutting and bending sheet aluminum (less
> than 0.25inch thick)?
Aluminium is tough to bend. 0.25" ist quite thick and I doubt that any
$200 tool will survive bending it.
I am bending 1mm aluminium (1/25th inch) on one of those cheapo $200
breaks similar but more simple than this one:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=43353
and it works fine. I would guess that 2mm, maybe 3mm is about the max it
will do without falling apart. Make sure that you have stops if you need
prcise bends (this one does not) and that you have various die sizes for
complex bends (this one does).
Matthias
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Posted by John Nagle on February 28, 2006, 11:43 pm
Please log in for more thread options Matthias Melcher wrote:
> howy wrote:
>
>> Hello,
>>
>> I have noticed some cheap sheet metal bending brakes for less than $200
>> floating around. Does anyone have any advice/experience with cheap (a
>> few hundred bucks) tools for cutting and bending sheet aluminum (less
>> than 0.25inch thick)?
>
>
> Aluminium is tough to bend. 0.25" ist quite thick and I doubt that any
> $200 tool will survive bending it.
>
> I am bending 1mm aluminium (1/25th inch) on one of those cheapo $200
> breaks similar but more simple than this one:
>
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=43353
>
> and it works fine. I would guess that 2mm, maybe 3mm is about the max it
> will do without falling apart. Make sure that you have stops if you need
> prcise bends (this one does not) and that you have various die sizes for
> complex bends (this one does).
Harbor Freight also has a 24" brake, which we used on Team Overbot.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=45877
If you don't need the big size, that's a nice little one.
Incidentally, you can't put a right angle bend in 0.25" sheet
for most common aluminum alloys. They'll crack. Steel, yes;
cold aluminum, no.
This bender, for narrow stock up to 2" x 0.25", will bend
mild steel with no problems. It's kind of a pain to set up,
and must be anchored to a solid, heavy bench, but one of those
was used to make most of our steel brackets. It does both
right-angle and roll bends.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=38471
The cheap combo bender/shear/roll things aren't very good, and
lack adequate guarding.
John Nagle
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Posted by howy on March 1, 2006, 3:41 pm
Please log in for more thread options Thanks guys,
This is the kind of info I was looking for.
The 40'' CAPACITY SHEAR, PRESS BRAKE & SLIP ROLL
at
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=43353
and this one
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=41162
look interesting.
I dont want to go this cheap, but for $99...
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=34104
-howy
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>
> I have noticed some cheap sheet metal bending brakes for less than $200
> floating around. Does anyone have any advice/experience with cheap (a
> few hundred bucks) tools for cutting and bending sheet aluminum (less
> than 0.25inch thick)?