CCHS 3D Printers

[Ben]

I've just been using the Prusa at the hackerspace, and the gearbox on the extruder has broken. JohnB will be fixing it on Monday. The laptop for the Cupcake isn't here, so at the moment we're printerless.

[Stuart Young]

On 1 September 2012 11:45, Ben <benhar...@gmail.com> wrote:

I've just been using the Prusa at the hackerspace, and the gearbox on the extruder has broken. JohnB will be fixing it on Monday. The laptop for the Cupcake isn't here, so at the moment we're printerless.

Not good.

I have a spare extruder gearbox that John gave me that I have no use for, so I'm happy to bring that in this afternoon when I'm there for MelRasPi stuff.

What number laptop was used for the Cupcake? I'm wondering why that's not in the space, though I can think of a few reasons relating to getting 3D software toolchains (*pokes Dave Chanter & John Spencer*) working on ALL the laptops, not just the ones currently assigned for the job.

FWIW: If anyone creates and/or changes profiles for slicing or control software for either the Prusa or the Cupcake, then these configs need to duplicated somewhere onto the other laptop (do NOT overwrite existing configs), so that if this sort of situation happens again, the Prusa laptop could be used to drive the Cupcake, and vice versa. We'll need to sort out some sort of location for this stuff to reside, as well as a naming convention to avoid clashes.

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Stuart Young (aka Cefiar)

[John Bosua]

John Spencer took the laptop home to put cura on it as its a bit of a pain to put on with linux

JB

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[John Spencer]

Whoops! I hadn't realised it was one of the in-use ones.

I'll bring it around this afternoon.

JohnS

On 1/09/2012 12:21 PM, John Bosua wrote:
> John Spencer took the laptop home to put cura on it as its a bit of a
> pain to put on with linux
>
> JB
>
>
>
> On 01/09/2012, at 12:15 PM, Stuart Young wrote:
>
>> On 1 September 2012 11:45, Ben <benhar...@gmail.com

>> <mailto:connected-commu...@googlegroups.com>.

>> To unsubscribe from this group, send email to
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[Stuart Young]

Both printers are noe working again (printing RasPi cases). :)

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Cef

On Sep 1, 2012 1:05 PM, "John Spencer" <john.spe...@gmail.com> wrote:

Whoops!  I hadn't realised it was one of the in-use ones.

I'll bring it around this afternoon.

JohnS

On 1/09/2012 12:21 PM, John Bosua wrote:

John Spencer took the laptop home to put cura on it as its a bit of a pain to put on with linux

JB



On 01/09/2012, at 12:15 PM, Stuart Young wrote:

On 1 September 2012 11:45, Ben <benhar...@gmail.com <mailto:benhar...@gmail.com>> wrote:

    I've just been using the Prusa at the hackerspace, and the
    gearbox on the extruder has broken. JohnB will be fixing it on
    Monday. The laptop for the Cupcake isn't here, so at the moment
    we're printerless.


Not good.

I have a spare extruder gearbox that John gave me that I have no use for, so I'm happy to bring that in this afternoon when I'm there for MelRasPi stuff.

What number laptop was used for the Cupcake? I'm wondering why that's not in the space, though I can think of a few reasons relating to getting 3D software toolchains (*pokes Dave Chanter & John Spencer*) working on ALL the laptops, not just the ones currently assigned for the job.

FWIW: If anyone creates and/or changes profiles for slicing or control software for either the Prusa or the Cupcake, then these configs need to duplicated somewhere onto the other laptop (do NOT overwrite existing configs), so that if this sort of situation happens again, the Prusa laptop could be used to drive the Cupcake, and vice versa. We'll need to sort out some sort of location for this stuff to reside, as well as a naming convention to avoid clashes.

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Stuart Young (aka Cefiar)

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[Stuart Young]

Now even. Stupid phone.

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Cef

[Stuart Mitchell]

lol

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Stuart (Auzze) Mitchell

Australia

[Stuart Young]

As mentioned, both printers are working.

John Spencer brought in the laptop configured for the FrankenCake.

We'll duplicate the setup onto the Prusa laptop in due course.

For those wondering what happened to the gearbox, we lost 2 teeth on the centre gear, and the moving gears got damaged

Pic:
 http://i.imgur.com/sqD1B.jpg

Note: I didn't use the front-facing part of the gearbox I had, as the hole in the front wasn't 100%, so we have a mostly red gearbox with a bit of black.

John Bosha: Can you please bring in a new gearbox anyway so we have one on hand as a spare, just in case? If you haven't printed it yet, I'd suggest printing it with 100% infill (or as close to it as possible), at least for the gears, as they seem to take a bit of a battering.

[Stuart Young]

Apart from the gearbox issue...

1. I found that the heated bed on the Prusa was not level (the rear left corner - min X max Y) was too high. Turns out one of the screws hits the thumbwheel, so I adjusted the others and changed the Z-home. I've left 0.015" inch between the bed and the point of the nozzle (done with bed and nozzle hot, using a sparkplug feeler gauge, at the four corners - min X/Y, min X max Y, max X min Y and max X max Y to ensure it's consistent). This seems to be about the right height, though I tuned the Z-end stop slightly to reduce it even further, but not as low as 0.010".

2. The wiring from the RAMPS board to the heated bed gets somewhat warm, and I suspect that some of our issues with the heated bed reaching 110 are possibly due to this, so it might be worth adding more wires in parallel or running larger gauge wire.

3. I'm going to try out a glass 'lid' (using some glass and fold-back clips) as a temporary solution for the heating of the heated bed. Putting a lid on the bed while heating will improve the heat-up time. Note that there will be a gap between the glass and the bed, so that the heat is trapped in between.

[Stuart Young]

On 1 September 2012 11:45, Ben <benhar...@gmail.com> wrote:

I've just been using the Prusa at the hackerspace, and the gearbox on the extruder has broken. JohnB will be fixing it on Monday. The laptop for the Cupcake isn't here, so at the moment we're printerless.

Just wanted to say thanks to Ben for bringing this to the list's attention so soon. It was a good piece of luck that I was actually planning to go to the space in the afternoon and had that spare gearbox still sitting around, but it means that we can start printing with the hackerspace Prusa pretty much first thing on Monday night (always a plus).

FWIW: John Spencer had taken the laptop home to setup Cura (another g-code slicer) on it. He dropped it back into the space this afternoon, and mentioned if he had realised that it was the only laptop that could run the FrankenCake, he'd have taken another and/or brought it back before Saturday. Dave, John and I are hoping to get all the laptops set up with the same config (and with a way to easily manage it) soon, and we'll make sure on Monday night that the two laptops can be used to replace each other in a pinch with minimal instruction.

Once again, thanks Ben!

[Andy Gelme]

hi Stuart,

On 2012-09-1 12:15 , Stuart Young wrote:
> FWIW: If anyone creates and/or changes profiles for slicing or control
> software for either the Prusa or the Cupcake, then these configs need
> to duplicated somewhere onto the other laptop (do NOT overwrite
> existing configs), so that if this sort of situation happens again,
> the Prusa laptop could be used to drive the Cupcake, and vice versa.
> We'll need to sort out some sort of location for this stuff to reside,
> as well as a naming convention to avoid clashes.

Your suggestion of using GitHub makes sense.

Freely available, distributed source (configuration) control.

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[Stuart Young]

On 3 September 2012 11:48, AndrewF <ajfis...@gmail.com> wrote:

Might also be worth considering something like Salt (or equally Puppet / Chef etc) as well which can manage the config and push it down. Coupled with GH for version tracking it, this would also mean you could deploy software + a set of changes to the target machines all at the same time, which might held with consistency...

Only issue with Salt/Puppet/etc is that this would usually require a server with lots of storage on site, which we are deliberately steering away from, as apart from the changes to config I can't see anyone stepping up to manage it.

[Dave Chanter]

Don't disagree at all, but the preference is to avoid any product that requires members to act as system administrators/devops for the fleet.

On Monday, 3 September 2012 11:48:05 UTC+10, ajfisher wrote:

Might also be worth considering something like Salt (or equally Puppet / Chef etc) as well which can manage the config and push it down. Coupled with GH for version tracking it, this would also mean you could deploy software + a set of changes to the target machines all at the same time, which might held with consistency...

[James Walker]

We use chef for a bunch of our stuff.

You can use chef-local if you don't want a server, tied through to a GH repo.

Trying to avoid having some admin/devop whilst getting a consistent install across all the laptops is not a very viable prospect.

You can at least reduce their workload through having "git pull" and "chef-client" run at some regular frequency.

For status of the machines you'd need a server, but OpsCode provides that for free if you are ok without things like environments.

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