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Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members. |
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22nd Oct 2018, 7:13 pm | #1 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,087
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Chassis Question
Can you buy 'U' shaped aluminium for DIY projects? About 6" across the top, 2" down the sides in various lengths. The stuff was a round on ebay to make DIY guitar amps and such. Used some to make a Mullard 3-3 on.
I haven't seen any of late. Maybe I am looking in the wrong place. All I have at the moment is the dismantled outer shell of a tower PC case. I thought it might come in handy sometime. |
22nd Oct 2018, 8:48 pm | #2 |
Octode
Join Date: Nov 2013
Location: Penrith, Cumbria, UK
Posts: 1,993
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Re: Chassis Question
perhaps a supplier of structural metalwork?
That sounds a bit like a rolled or extruded channel section. You may be able to score some offcuts/scrap for not too much? A. |
23rd Oct 2018, 8:38 am | #3 |
Nonode
Join Date: May 2007
Location: Preston, Lancashire, UK.
Posts: 2,511
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Re: Chassis Question
A better description of just what you are looking for would be helpful. Perhaps a picture of the Mullard 3-3 amplifier?
Andy |
23rd Oct 2018, 10:22 am | #4 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,087
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Re: Chassis Question
The metal chassis I used for the 3-3 was originally supplied as a blank to make a guitar amplifier on. It is 2mm aluminium, which is a bit on the thick side if you aren't mounting the hefty transformers for a guitar amp.
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23rd Oct 2018, 1:56 pm | #5 |
Nonode
Join Date: Oct 2010
Location: Tintinara, South Australia, Australia
Posts: 2,343
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Re: Chassis Question
While this is an Australian link https://www.ullrich.com.au/extrusions/channels it should give you an idea of what is available.
Somebody will know a UK supplier that should have much the same stuff. One thing you will notice is the thickness of the stuff as the width and height size goes up. |
23rd Oct 2018, 4:18 pm | #6 |
Guest
Posts: n/a
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Re: Chassis Question
A local sheet metal firm will willingly fold up a bit of ali for you, a neat drawing (a 3d dimensioned sketch is all they need) and "how much for cash" usually works. My last bit of bent metal about that size was less than a tenner (they got a tenner, keep 'em sweet).
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24th Oct 2018, 6:37 am | #7 |
Dekatron
Join Date: Jul 2009
Location: Sleaford, Lincs. UK.
Posts: 7,670
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Re: Chassis Question
I might be able to make what you want, I have 2mm and 0.75mm ali sheet, but Merlin's idea is a good one, my local ish aluminium supplier does this, they'd be able to do it cheaper than I could I think.
Andy.
__________________
Curiosity hasn't killed this cat...so far. |
24th Oct 2018, 9:33 am | #8 |
Dekatron
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 14,010
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Re: Chassis Question
These guys:
http://www.aluminiumuk.co.uk/ have a range of extrusions that may be of use. I've bought aluminium tube/rod for antennas from them in the past. |
24th Oct 2018, 9:35 am | #9 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,999
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Re: Chassis Question
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24th Oct 2018, 12:07 pm | #10 |
Octode
Join Date: Nov 2013
Location: Penrith, Cumbria, UK
Posts: 1,993
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Re: Chassis Question
I have some of those for a job, bought from bluebell audio in scotland, he has a website and the prices aren't too bad for bare chassis. They are pretty good.
http://www.bluebellaudio.com/ andy |
24th Oct 2018, 3:21 pm | #11 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,999
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Re: Chassis Question
You got there before me! I failed to remember the name Bluebell, and managed to find it in my shortcuts.
Bought chassis from them before - they are good guys. Craig |
24th Oct 2018, 11:29 pm | #12 |
Rest in Peace
Join Date: Feb 2004
Location: Hexham, Northumberland, UK.
Posts: 2,234
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Re: Chassis Question
A few years ago I kept having the same problem so took the plunge and bought a metal bending rig. I buy blank sheets of aluminium (even RS do them) and bend my own chassis. The bender is bulky to store and isn't used a lot but it is really useful for a variety of jobs. I remember that even good ol' Maplin used to supply ready made chassis in a couple of sizes.
Alan. |
25th Oct 2018, 12:09 am | #13 |
Nonode
Join Date: Jul 2005
Location: Hull, East Yorkshire, UK.
Posts: 2,087
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Re: Chassis Question
The chassis I was looking at was around 11 quid or 16 if I wanted a base plate. Not bad really.
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