[ELECTRON] Proposed new club + Arduino meet up

[Martin McGrath]

The printer in the room requires some configuration in order to get it
working at all, but I think the drum has seen better days.

Cheers

Martin
On Jan 29, 2012 3:18 PM, "Kieran Wyse" <kieranwyse at gmail.com> wrote:

> What materials would we need to print a pcb board for the heat bed?
>
> As I understand it we need.
>
> Pcb board.
> Laser printer - ( is there one at the electon club)
> Glossy paper for the print.
> An iron.
> A cloth
> Nitric acid.
>
> An led and the correct resistor.
>
> Have I left anything out. ( Or is there a better way to print boards)?
> Kieran
>
>
>
>
> On 23 January 2012 23:38, Thomas Parry <yrrapt at gmail.com> wrote:
>
> > We could certainly have a go at making our own PCB heating bed. Will be
> > pretty simple to do and there's hardy anything lost if it fails.
> >
> > Tom
> > On Jan 23, 2012 8:26 PM, "Blair Thompson" <mail at justblair.co.uk> wrote:
> >
> > > As I understand it Clive. For glass the qualities that makes the
> > > difference are:
> > >
> > >  * It presents a nice flat surface for the plastic to adhere to.
> > >  * It does not warp when heated
> > >  * Its pretty light when compared to steel or 6mm thick machine
> aluminium
> > >  * Its surface hard to damage when removing parts
> > >  * Its cheap (£5 per 20cm^2)
> > >
> > > The high insulation is actually one of it's downsides.  It takes longer
> > to
> > > heat up than aluminium, and as it does not conduct heat so well, it
> must
> > be
> > > heated evenly for both the quality of the print and to prevent the
> glass
> > > cracking.  Some people put heater/thin alu/glass as a combination.
> > >
> > > On 23/01/2012 18:51, Clive Mitchell wrote:
> > >
> > >> I think glass is often used because it's a good balance between laying
> > >> down the first plastic and then separating the finished object
> > >> afterwards.  It's also a good insulator, so that allows the heating
> > >> element to be placed in direct contact.
> > >>
> > >> The PCB based heating plate looks neat.  By specifying a standard
> > >> copper thickness and fine tuning the track width and length they seem
> > >> to have come up with a very simple and consistent heating plate.
> > >>
> > >> On 23 January 2012 17:45, Kieran Wyse<kieranwyse at gmail.com>  wrote:
> > >>
> > >>> It is very likely we are going to make a heated bed( please forgive
> my
> > >>> stupidity if this is not the top and bottom plates). Brian has
> > suggested
> > >>> he
> > >>> may be able to get hold of some metal sheet but for best results, I
> > have
> > >>> read, that a glass plate on top is good.
> > >>>
> > >>> I don't think a decision has been made but it is likely we will go
> the
> > >>> thermistor route copper wire for the heat bed. If you had some lying
> > >>> around
> > >>> it would force us to make a decision:)
> > >>>
> > >>
> > >>
> > >>
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