How to cut large heatsinks? - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 31st January 2008, 02:20 AM   #1
diyAudio Member
 
Join Date: Dec 2005
Location: Seattle, WA, USA
Question How to cut large heatsinks?

I have 2 heat sink extrusions measuring 5X8X25 inches. I would like to cut each one to 6" lengths. Can this be done reasonably accurately in a DIY fashion, or should I find a machine shop? What would a reasonable price be per cut?

Bob G.
  Reply With Quote
Old 31st January 2008, 04:24 AM   #2
herm is offline herm  United States
diyAudio Member
 
Join Date: Mar 2002
Location: Pasadena, CA USA
I did a thread on cutting aluminum.

Here's the link:

Cutting Aluminum Thread

If you have experience with power tools, its fairly do-able.
If you don't I wouldn't recommend it.

Sorry about all the drama in that thread


herm
  Reply With Quote
Old 31st January 2008, 05:45 AM   #3
diyAudio Member
 
Join Date: Jan 2008
Those are large pieces... in metric 12.7 x 20.32 x 63.5cm...

I would use a chop-saw or a bandsaw with a metal blade...

Perhaps there is a local junkyard/salvage yard... where they might have a chopsaw...

Wouldn't take more than a few minutes and shouldn't cost much...

You could also try a highschool, if they have tech classes you could get a student to do it...
  Reply With Quote
Old 31st January 2008, 06:38 PM   #4
Minion is offline Minion  Canada
diyAudio Member
 
Join Date: May 2006
Location: Cowican Bay , vancouver island
I used a Chop saw to cut a 12 in x 10 in Heatsink into 3 Parts, It was hard to get a proper straight edge when cutting but was able to grind the edges smooth with a grinding tool...Didn"t take long and was pretty easy...I suggest you put the Heatsink in a stable vice before attempting to cut....

Cheers
  Reply With Quote
Old 31st January 2008, 07:01 PM   #5
diyAudio Member
 
Join Date: Dec 2005
Location: Seattle, WA, USA
Quote:
Originally posted by herm
I did a thread on cutting aluminum.

Here's the link:

Cutting Aluminum Thread

If you have experience with power tools, its fairly do-able.
If you don't I wouldn't recommend it.

Sorry about all the drama in that thread


herm

Thanks, lots of good info there.

Bob G.
  Reply With Quote
Old 31st January 2008, 07:42 PM   #6
cuibono is offline cuibono  United States
diyAudio Member
 
cuibono's Avatar
 
Join Date: May 2006
Location: City of Angles
I didn't read the above thread, so I might be repeating, but I've cut heatsinks with:

a hack saw - works well, but maybe slow, and doesn't cut deeper than a few inches.

a masonry blade, in a table saw: worked quickly, straight cut, danger from sparks + sawdust. I assume you could put the blade in a circular saw too, but you've got to clamp it real well. I'd bet a diamond blade for cutting tile might work too.

I've even used a regular hand saw (for wood) one night when I was desperate. A reciprocating saw with a metal blade would work too..
  Reply With Quote
Old 31st January 2008, 07:50 PM   #7
poynton is offline poynton  United Kingdom
diyAudio Member
 
poynton's Avatar
 
Join Date: Mar 2005
Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
I used a tile cutting saw with a diamond disk


Andy
Attached Images
File Type: jpg 93ad_1.jpg (16.9 KB, 160 views)
  Reply With Quote
Old 31st January 2008, 08:54 PM   #8
quasi is offline quasi  Australia
diyAudio Member
 
quasi's Avatar
 
Join Date: Sep 2004
Location: Adelaide, Australia
If you have access to a mill, this is how I cut mine.

The large heatsink was clamped to a heavy angle bracket which was bolted to the mill table. Nice and slow but dead accurate. Note the use of lubrication during the cut.

Cheers
Quasi
Attached Images
File Type: jpg cutting heatsink.jpg (91.0 KB, 150 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 4 large heatsinks Killjoy99 Swap Meet 6 3rd April 2008 01:24 AM
FS: Large Heatsinks Bakmeel Swap Meet 3 17th October 2006 05:58 PM
FS:4 large heatsinks 0.3K/W Thomas Swap Meet 0 10th October 2005 10:01 PM
Large Heatsinks anyone Rixsta Parts 9 27th April 2004 02:40 PM


New To Site? Need Help?

All times are GMT. The time now is 11:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2