[sdiy] Eurorack panels DIY

[Barry Klein]

Ok so I'm thinking that's engineering speak for "fagettaboutit" for the punch.
Looking at specs of their lower cost shears I guess the same is said for them.
So anyone have advice on getting aluminum cut to panel sizes?
Typical costs?  Cheapest source for precut panels?

Barry


-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Andre Majorel
Sent: Tuesday, January 31, 2012 12:36 AM
To: synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Eurorack panels DIY

On 2012-01-30 17:49 +0000, Barry Klein wrote:

> I didn't see any responses for suggestions for the hole punch and 
> whether or not the Harbor-Freight shear is sufficient for our 
> purposes.

Shear area in mm² multiplied by shear strength in MPa gets you a force in N. For example, for a 10 mm round hole in 3 mm thick 2017A aluminium in T42 state,

  10 * 3.14 * 3 * 390 = 36_738

I.e. you would need a 3.7-ton punch.

390 MPa is towards the high end for aluminium alloys. Some alloys/states are less than half of that.

--
André Majorel http://www.teaser.fr/~amajorel/ _______________________________________________
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