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3D printer status and call for help [message #14794] Sun, 27 May 2018 15:33 Go to next message
Beata is currently offline  Beata
Messages: 75
Registered: August 2013
Location: Springfield
Member

I've done about all I can on my own. This is what needs to be done.

Trinity: Purchase a real hot end, not this thing with bare leads and a resistor that either burns out or shorts out.
This printer is configured for 24V, 3mm direct drive, E3D style mounting.
Here's the canonical hot end. Looks to be on sale at the moment.
$73 now for $58.99 from MatterHackers: https://www.matterhackers.com/store/l/e3d-all-metal-v6-hoten d-full-kit-3.00mm-direct-24v/sk/MP11EZSM
$83 from Amazon: https://www.amazon.com/E3D-All-metal-HotEnd-3-00mm-Direct/dp /B01F5Z3FQA/
Donations toward this purchase (or the purchase itself) are welcome.

Ultimaker: Purchase Imperial-measure PTFE tubing for bowden tube. Replace tube clamps with ones that won't eat the tube and come loose. Alternately, spec new (metric) PTFE tubing and replace tube clamps.
This one's a bit silly. Original tubing measures 1/8 inch inner, 1/4 inch outer (3.18mm inner, 6.35mm outer). Modern 3mm printers appear to use 4mm inner, 6mm outer. This printer ha
...

Re: 3D printer status and call for help [message #14795 is a reply to message #14794] Sun, 27 May 2018 15:40 Go to previous messageGo to next message
Beata is currently offline  Beata
Messages: 75
Registered: August 2013
Location: Springfield
Member

FWIW, here's tubing for 1.75mm (2mm x 4mm) at $0.55 per foot.
Re: 3D printer status and call for help [message #14796 is a reply to message #14795] Sun, 27 May 2018 15:43 Go to previous messageGo to next message
Karen Englebeck is currently offline  Karen Englebeck
Messages: 61
Registered: September 2017
Member
Just a reminder, I sent $10 to your paypal the other day (
EMAIL HIDDEN ) towards the new hot-end

On Sun, May 27, 2018 at 3:40 PM, Beata wrote:

> FWIW, here's tubing for 1.75mm (2mm x 4mm) at $0.55 per
> foot.
> --
> Posted from the Discuss forum
> _______________________________________________
> Discuss mailing list
Re: 3D printer status and call for help [message #14806 is a reply to message #14794] Sat, 16 June 2018 16:40 Go to previous messageGo to next message
Beata is currently offline  Beata
Messages: 75
Registered: August 2013
Location: Springfield
Member

Updates.

Ultimaker:
Found the correct tubing. Will not cut to length until fittings have been replaced.
Need blue tape for the print bed. Need the stuff around the shop generally.

Trinity:
Need to pick up a washer/O-ring and then finish the wiring.

Thanks be to David and Karen for contributing toward the purchase of new hot end. Seeking further contributions, currently at $45/$65.
Re: 3D printer status and call for help [message #14815 is a reply to message #14806] Sun, 08 July 2018 18:52 Go to previous messageGo to next message
Beata is currently offline  Beata
Messages: 75
Registered: August 2013
Location: Springfield
Member

For those of you following along at home:
My fault. The extruder jammed, clogged, then bent itself, and I tore up the threads trying to get the burnt plastic out.
That said, here's what I suspect happened:
The extruder is made out of multiple parts screwed and bolted together. The type we have is a long metal tube with a small but powerful heater and nozzle on one end, and heat fins and a fan on the other. In proper operation, the plastic is not supposed to heat up enough to melt until it gets to the heater. If the plastic does melt too early, it is possible for it to flow into the tiny gaps between parts and then re-solidify, where it causes a filament jam. This is more likely to happen if the heater is at full temperature and the plastic isn't moving fast enough or gets stuck.

This is why neither printer currently works.

Ultimaker:
This never had heat fins to begin with.

Trinity:
The fan used for cooling the heat fins is defined in the firmware as the fan used for cooling the part, and is deli
...

Re: 3D printer status and call for help [message #14827 is a reply to message #14815] Sat, 11 August 2018 14:04 Go to previous messageGo to next message
Beata is currently offline  Beata
Messages: 75
Registered: August 2013
Location: Springfield
Member

Another update: Meh.

Ultimaker: Installed the Z endstop adjustment knob. Should be functional again. Do not yet have the workstation or a print server configured.
Trinity: Purchase or mill a new heat block, fix up wiring for always-on cooling fans.

Our new friend the Anet A8: Missing feed assembly, missing green power connector, many broken printed parts. Cas, are there any more parts floating around?
The EZ3DX resin printer: Cut our losses.

Future improvements:
Ultimaker: Replace stacked plywood components with 3D printed or milled versions. Source or build heated bed upgrade. Source or build front panel controller.
Trinity: Fix or replace heated bed. Build enclosure. Build fume exhaust. Make quiet.
Anet A8: Safer power supply. Enable safety features. Safer wiring. Less gefingerpoken.

Everything: Filament runout and jam detection, auto load/unload.
Re: 3D printer status and call for help [message #14828 is a reply to message #14827] Sat, 11 August 2018 16:07 Go to previous message
Karen Englebeck is currently offline  Karen Englebeck
Messages: 61
Registered: September 2017
Member
Beata,

Have a glance again at the components inside the K40 enclosure (the new
laser). There are a number of 3D printed parts in there that don't seem to
go to the laser, that might be relevant to the A8?

On Sat, Aug 11, 2018 at 2:04 PM, Beata wrote:

> Another update: Meh.
>
> Ultimaker: Installed the Z endstop adjustment knob. Should
> be functional again. Do not yet have the workstation or a
> print server configured.
> Trinity: Purchase or mill a new heat block, fix up wiring
> for always-on cooling fans.
>
> Our new friend the Anet A8: Missing feed assembly, missing
> green power connector, many broken printed parts. Cas, are
> there any more parts floating around?
> The EZ3DX resin printer: Cut our losses.
>
> Future improvements:
> Ultimaker: Replace stacked plywood components with 3D
> printed or milled versions. Source or build heated bed
> upgrade. Source or build front panel controller.
> Trinity: Fix or replace heated bed.
...

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