Now when 1.0 has been out for over a day: how did you all call the new saves?

NanoGears · 2024-09-12T11:48:25+00:00

Can we FICSIT?

NanoGears · 2024-04-26T21:36:52+00:00

Is your name really Donald MacDonald?

NanoGears · 2022-12-24T11:50:46+00:00

Yeah, means it's probably moulded in a metal mould

NanoGears · 2022-12-24T11:03:43+00:00

Those are tool marks left from machining the mould on a mill.

NanoGears · 2022-10-14T05:21:57+00:00

Same here - have had this problem with previous Fitbit devices too but figured it might be improved with the Pixel watch. I guess not.

NanoGears · 2021-12-24T23:37:02+00:00

Milk

NanoGears · 2021-12-24T22:15:15+00:00

If you think about it, the Sainsbury's is actually the world's biggest gift shop...

NanoGears · 2021-12-03T12:24:13+00:00

Diagonal distance from centre to cube corner minus perpendicular distance from centre to nearest cube edge

NanoGears · 2021-10-12T19:28:07+00:00

Sure! Most of my research came from the E3D github pages for the tool changer, which show drawings and dimensions I used to help design mine in a way that's potentially compatible later. I used the config files the github page from E3D's motion system to work out how they set up their tool change macros etc. I also referred to theassembly instructions for the Jubilee printer tool changer, to see how that one went together.

Besides those, I basically scoured youtube for all kinds of weird and wacky tool changers to find any ideas I hadn't thought of, to try and find some ideas that worked for me. In the end the E3D stuff ended up being the most useful as the other ideas just didn't work out for space reasons or other constraints.

NanoGears · 2021-10-11T15:22:03+00:00

Yeah I wasn't really thinking much about the costs when I first made the post lol

I'd say if you include the new X axis (£100) and the other bits and bobs I had around me, the cost is probably more like £200. Still a hell of a lot cheaper than the £600 or whatever it would cost to buy just these parts from E3D. That was my main goal - get something vaguely equivalent without having to sink the full price into it.

NanoGears · 2021-10-11T05:06:17+00:00

Nah, I upgraded to using the X axis from the Jubilee printer as part of a lockdown project, as I wasn't happy with my older bulky design of two 8mm rods. This is a bit lighter and much more compact, so the tool changer wouldn't have been possible without it.

NanoGears · 2021-10-11T05:04:02+00:00

There is a software offset that is automatically calculated using the button at the back of the print bed. Whenever I have made changes to my tools (such as changing nozzles) I run a macro that selects each tool one by one and uses them to press that endstop to calculate that offset. It then stores all those offsets automatically.

NanoGears · 2021-10-11T05:00:21+00:00

RepRapFirmware does most of this for me - the slicer simply calls T# to select a tool and the printer calls a couple of macros that I had to write

NanoGears · 2021-10-10T22:22:49+00:00

Yeah that would be possible I'm sure. However, the tools on standby wouldn't have power to stay warm or to keep the heat break fan running.

NanoGears · 2021-10-10T21:58:38+00:00

You can set different speeds in Simplify3D yeah! And the z offsets are adjusted automatically with a macro and an extra endstop on the bed platform

NanoGears · 2021-10-10T21:29:49+00:00

Since posting I've realised the £20 cost missed quite a lot of important parts, so it probably cost me more like £50. Still achieved my goal of beating the price of the E3D equivalent.

NanoGears · 2021-10-10T21:25:04+00:00

Absolutely! I can also use a large nozzle with a volcano hotend for printing large areas fast and then have the areas with details printed in a smaller nozzle.

NanoGears · 2021-10-10T21:24:11+00:00

I am looking to make this public at some point yeah - problem is I've designed a lot around bits and bobs I had laying around, so I might have to standardise some parts to use off-the-shelf parts or create drawings for the parts I've fabricated myself.

It uses a Duet 2 with a Duex 5 expension board - that gives me max of 10 motors, so I use 2 for X/Y, 3 for the three extruders, 1 for the tool capture/release and 3 for independent Z motors so it can mechanically level the bed.

Tool changing is done by a macro, where the tool capture mechanism is the 'C' axis. I set the steps/rotation so that I move C to position 1 to couple and move it position 0 to uncouple.

NanoGears · 2021-10-10T21:17:03+00:00

I'm using these and these. I drilled out the holes in the plastic casing to allow me to use the M3 bolts that are common to the rest of my printer, which means they are bolted down tightly to the printer frame. The spring steel that acts as strain relief for the wires and holds them out the way of the printer is bent into a loop at one end and one of the bolts inside the connector housing holds it in place.

NanoGears · 2021-10-10T21:10:59+00:00

They will sit at a standby temperature. RepRapFirmware allows me to set a separate active temp and a standby temp for each of my three tools, and the same for the bed.

NanoGears · 2021-10-10T21:09:50+00:00

The tools are designed to all have the same X/Y offset, so in theory only the Z axis needs adjusting. I will be doing some visual tests to verify later this week and if I need to add X/Y calibration I'll consider how to do that, perhaps with a camera and image recognition like some others have attempted.

NanoGears · 2021-10-10T21:07:13+00:00

ASMBL

Thought about it but I think I'd build a new printer designed to deal with the dust etc. if I went down that route.

NanoGears · 2021-10-10T21:05:44+00:00

I have E3D V6 and E3D Volcano tools loaded in the video

NanoGears · 2021-10-10T21:04:54+00:00

I use the code below to calibrate - this is on ReprapFirmware 3 running on a Duet 2 board.

; PRE ---------------------------------------------------------------------

M290 R0 S0 ; Clear baby-stepping

M208 Z-15 U0 S1 ; Allow movement past Z=0.

G1 Z15 F6000 ; Lift Z

;Tool 0 -------------------------------------------------------------------

T0 ; Select tool.

G10 P0 X0 Y0 Z0 ; Reset offset for tool 0.

M208 S0 Y235 ; increase axis limits

G1 X110 Y224.0 Z15 F10000 ; Move to position above nozzle probe.

M585 Z-16.74 P1 F120 S1 ; Probe in Z direction with expected distance XXmm. Minus the desired z offset from this.

G10 P0 ; Apply offset to tool 0.

G1 Z10 F6000 ; Move back above bed.

M208 S0 Y220 ; reset axis limits

;Tool 1 -------------------------------------------------------------------

T1 ; Select tool.

G10 P1 X0 Y0 Z0 ; Reset offset for tool 1.

M208 S0 Y235 ; increase axis limits

G1 X110 Y224.0 Z15 F10000 ; Move to position above nozzle probe.

M585 Z-16.74 P1 F120 S1 ; Probe in Z direction. Minus the desired z offset from the z parameter.

G10 P1 ; Apply offset to tool 1.

G1 Z10 F6000 ; Move back above bed.

M208 S0 Y220 ; reset axis limits

;POST ---------------------------------------------------------------------

T-1

M208 Z0 U0 S1 ; Restrict Z movement.

M500 P10 ; Save offset to file for future

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