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by PJR
Tue Nov 21, 2017 6:15 pm
Forum: Original Prusa i3 MK2 Multi Material
Topic: Blockage troubleshooting.
Replies: 271
Views: 10661

Re: Blockage troubleshooting.

Print completed... Same, same but different. Just finished (apologies for the delay. I made the following changes to the G-code you uploaded: Changed to E2 (simply because I had white filament in E2 Added my PID settings Added my G80 bed levelling code I used while PLA from my local supplier and po...
by PJR
Tue Nov 21, 2017 9:12 am
Forum: Original Prusa i3 MK2 Multi Material
Topic: Differences in the new heatbreak?
Replies: 7
Views: 563

Re: Differences in the new heatbreak?

>> The heat break is drilled 2.1mm internal diameter from the top and 2mm from the bottom << Well interesting, mine is 2.3 mm from the top and 2.0 mm from the bottom. The 2.3 mm bore is quite rough and shows tool marks (due to a worn or damaged drill bit and/or an improper manufacturing process). T...
by PJR
Tue Nov 21, 2017 9:02 am
Forum: Original Prusa i3 MK2 Multi Material
Topic: Stringing on MM
Replies: 25
Views: 716

Re: Stringing on MM

joris.m wrote:
Mon Nov 20, 2017 10:12 pm
I suppose playing with linear advance might also help?
Theoretically it should.

Peter
by PJR
Tue Nov 21, 2017 9:00 am
Forum: Original Prusa i3 MK2 Multi Material
Topic: Why high retraction values in single extruder mode?
Replies: 3
Views: 102

Re: Why high retraction values in single extruder mode?

There are 2 things which determine retraction: 1. Extruder geometry 2. Viscoelasticity of the filament The extruder geometry is broken down further: Nozzle diameter (default 0.4mm) Nozzle bore length (default 0.6mm) Drive length (MMU default 535mm( And the filament: Viscosity of the melted filament ...
by PJR
Tue Nov 21, 2017 8:48 am
Forum: Original Prusa i3 MK2 Multi Material
Topic: Blockage troubleshooting.
Replies: 271
Views: 10661

Re: Blockage troubleshooting.

Maybe someone can elaborate on the topic of bore diameters...obviously somewhere below the PTFE it must be wider, otherwise we wouldn't get these wider blobs. Where exactly is the differing bore diameter located (inside the heatbreak and if yes where, between heatbreak and PTFE or between nozzle an...
by PJR
Mon Nov 20, 2017 9:00 pm
Forum: Prusa i3 kit - Building, calibrating, first print, maintenance, ...
Topic: Bed leveling failed after three prints
Replies: 3
Views: 101

Re: Bed leveling failed after three prints

Lower the probe just a very small amount.

Peter
by PJR
Mon Nov 20, 2017 7:43 pm
Forum: Original Prusa i3 MK2 Multi Material
Topic: Ligament management
Replies: 6
Views: 148

Re: Ligament management

I thought the filament is hygroscopic. Is there no need to store the spools in a container? Ideally, you should store it sealed with silica gel, but you will be OK without for a few weeks. PLA will "go off" when it gets damp; it's quite obvious when this happens. The extrusion will become a little ...
by PJR
Mon Nov 20, 2017 7:38 pm
Forum: Original Prusa i3 MK2 Multi Material
Topic: Why high retraction values in single extruder mode?
Replies: 3
Views: 102

Re: Why high retraction values in single extruder mode?

Bowden tubes and the viscoelasticity of the filament.

Peter
by PJR
Mon Nov 20, 2017 5:44 pm
Forum: Original Prusa i3 MK2 Multi Material
Topic: Stringing on MM
Replies: 25
Views: 716

Re: Stringing on MM

Socks: https://e3d-online.com/v6-socks-pro-pack-of-3

These are better than the new type; they cover the nozzle so nothing sticks.

Peter
by PJR
Mon Nov 20, 2017 3:32 pm
Forum: Original Prusa i3 MK2 Multi Material
Topic: Blockage troubleshooting.
Replies: 271
Views: 10661

Re: Blockage troubleshooting.

malcinator wrote:
Mon Nov 20, 2017 3:05 pm
I have attached the multipart gcode file... pre M900 K200 & 1.0 extrution multplier adjustments.
Thanks. Will have a look and try printing.

Peter

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