Australia" Received: by 10.180.79.71 with SMTP id h7mr221625wix.3.1352972867275; Thu, 15 Nov 2012 01:47:47 -0800 (PST) X-BeenThere: hackerspace-adelaide@googlegroups.com Received: by 10.180.79.42 with SMTP id g10ls191566wix.6.gmail; Thu, 15 Nov 2012 01:47:46 -0800 (PST) Received: by 10.204.145.140 with SMTP id d12mr25923bkv.6.1352972866466; Thu, 15 Nov 2012 01:47:46 -0800 (PST) Received: by 10.204.145.140 with SMTP id d12mr25922bkv.6.1352972866432; Thu, 15 Nov 2012 01:47:46 -0800 (PST) Return-Path: Received: from mail-lb0-f169.google.com (mail-lb0-f169.google.com [209.85.217.169]) by gmr-mx.google.com with ESMTPS id v13si1271636bkw.0.2012.11.15.01.47.46 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 15 Nov 2012 01:47:46 -0800 (PST) Received-SPF: pass (google.com: domain of cyberte...@gmail.com designates 209.85.217.169 as permitted sender) client-ip=209.85.217.169; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of cyberte...@gmail.com designates 209.85.217.169 as permitted sender) smtp.mail=cyberte...@gmail.com; dkim=pass header...@gmail.com Received: by mail-lb0-f169.google.com with SMTP id gk1so1385162lbb.14 for ; Thu, 15 Nov 2012 01:47:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=PXCcIhBiUoZRzT9vg78I6MOAmRbSVOS8vrx+ucSI1Cs=; b=EMJ0tjlpmVJqdR+1GqGYKBvxSOjYD+gcNrMG8+Xn0s6xqVnfvTz/cFatwKrD4p3Hvg OPhPD49xjgaD4rbFUevGlT7G37VC5a3qp3IT0XBZlmtXwWRnBgOHuwTBqc09OlvqWpHx BcRpupohMm6YdcOE6VH1tTlEMQy77RI+g1Sa876bcoVmbokAVPmoU+VBAWwOkbNIvxGj 8PxIT1Eam397Lu86Yr8GIb6K3MNdzDrOGYwAVC48GWgQWoAUuCT6oaVkLbolACN04U7f Ha6xj073yaAyl+KhbwhN8rnyRGNZCpqywBWAUKF4clV/L2OHXiNl3SMhBXwkpyjOFrJb zeVQ== MIME-Version: 1.0 Received: by 10.112.14.9 with SMTP id l9mr369144lbc.78.1352972865907; Thu, 15 Nov 2012 01:47:45 -0800 (PST) Received: by 10.112.155.34 with HTTP; Thu, 15 Nov 2012 01:47:45 -0800 (PST) In-Reply-To: <50A4ACA2.1040...@softgrow.com> References: <50A4A6D3.6090...@softgrow.com> <50A4ACA2.1040...@softgrow.com> Date: Thu, 15 Nov 2012 20:17:45 +1030 Message-ID: Subject: Re: [HACK-ADL] CNC Machining versus 3D Printing From: Andrew Helgeson To: hackerspace-adelaide@googlegroups.com Content-Type: multipart/alternative; boundary=f46d0401fe75102a8f04ce858bc6 --f46d0401fe75102a8f04ce858bc6 Content-Type: text/plain; charset=ISO-8859-1 Machining history 101 question, if you need a lathe to make a lathe, where did the first lathe come from? Think about the first steam engines or trains. Stevenson's "Rocket" was built with "file technology". The clearances on the cylinder/piston must have been huge. From there to here we have made things, to make things to make things, to make things, etc. If you stop to think about it for a bit, it's pretty daunting Andrew On Thu, Nov 15, 2012 at 7:19 PM, Alex Sims wrote: > I've just read about Fab Lab Adelaide > > http://fablabadelaide.org.au/ > > They have a laser cutter and a milling machine, I need to start thinking > up things to make... > > > On 15/11/2012 6:54 PM, Alex Sims wrote: > >> I was pointed to "Guerrilla guide to CNC machining, mold making, and >> resin casting" from Hacker News (http://news.ycombinator.com/) >> >> http://lcamtuf.coredump.cx/**gcnc/ The article >> >> http://news.ycombinator.com/**item?id=4679939Comments from Hacker News >> >> which makes the case that we should not be 3D printing, where a substrate >> is built up but instead be 3D machining where substrate is removed, so a >> negative rather than a positive process. I've read through the article a >> couple of times and it seems to me at least persuasive. I was really >> impressed by the super-tiny very-colourful planetary gearbox the author of >> the article made. Also a choice of matt or gloss finish on your articles >> being made at print time, no sand-paper required. I haven't done any 3D >> printing but would seriously like to do some machining, particularly where >> I can use a variety of substrates. >> >> Is anyone thinking of going down this path? Could the Innovation lab be >> persuaded that they really should buy a CNC machine? Maybe a laser cutter? >> Sydney has one, Canberra does, should Adelaide be next? >> >> Alex >> >> >> > -- > You received this message because you are subscribed to the Google Groups > "HackerSpace - Adelaide, South Australia" group. > To post to this group, send email to hackerspace-adelaide@** > googlegroups.com . > To unsubscribe from this group, send email to hackerspace-adelaide+** > unsubscribe@googlegroups.com > . > For more options, visit this group at http://groups.google.com/** > group/hackerspace-adelaide?hl=**en > . > > --f46d0401fe75102a8f04ce858bc6 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Machining history 101

question, if you need a lathe to make a lathe,= where did the first lathe come from?

Think about the first steam en= gines or trains.

Stevenson's "Rocket" was built with &= quot;file technology".

The clearances on the cylinder/piston must have been huge.

From = there to here we have made things, to make things to make things, to make t= hings, etc.

If you stop to think about it for a bit, it's pretty= daunting


Andrew

On Thu, Nov 15, 2012 at 7:= 19 PM, Alex Sims <a...@softgrow.com> wrote:
I've just read about Fab Lab Adelaide

http://fablabad= elaide.org.au/

They have a laser cutter and a milling machine, I need to start thinking up= things to make...


On 15/11/2012 6:54 PM, Alex Sims wrote:
I was pointed to "Guerrilla guide to CNC machining, mold making, and r= esin casting" from Hacker News (http://news.ycombinator.com/)

http://lcamt= uf.coredump.cx/gcnc/ The article

http://news.ycombinator.com/item?id=3D4679939 Comments from Hac= ker News

which makes the case that we should not be 3D printing, where a substrate i= s built up but instead be 3D machining where substrate is removed, so a neg= ative rather than a positive process. I've read through the article a c= ouple of times and it seems to me at least persuasive. I was really impress= ed by the super-tiny very-colourful planetary gearbox the author of the art= icle made. Also a choice of matt or gloss finish on your articles being mad= e at print time, no sand-paper required. I haven't done any 3D printing= but would seriously like to do some machining, particularly where I can us= e a variety of substrates.

Is anyone thinking of going down this path? Could the Innovation lab be per= suaded that they really should buy a CNC machine? Maybe a laser cutter? Syd= ney has one, Canberra does, should Adelaide be next?

Alex



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For more options, visit this group at http://groups.google.c= om/group/hackerspace-adelaide?hl=3Den.


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