Help to setup BMG clone extruder
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@TPJensen How are you fairing so far?
Esteps on the extruder is a hardware value. It is best set it to your machine EXACTLY, not what is published.
Use your best toleranced filament and compute it. The longer the sample that you use for calibration the better it will average out any error.
I use the cold extrude gcode, remove the bowden tube from the hotend, cut the filament flush to the tube, extrude a meter, 1000mm and measure with a metric tape measure from the end to the bowden tube face. Even with inaccuracy of a tape measure, it comes out pretty good. At 1000mm, the error of what you might make reading a 100mm sample is going to average down to 1/10 of that.
The difference you might see when you are printing is going to be from differences in filament diameter and 'die swell' for lack of a better term. some filaments swell when they are heated and extruded, an ti can change at different temps too.
Depending on your slicer, there are ways to tweak it in the slicer profile. If you have an extrusion factor for example. In Slic3r PE, for some PLA I have it as low as 0.93 or even 0.88 for some really fussy stuff.
You can use the extrusion multiplier on the PanelDue or DWC, but the risk there is you forget that you fussed with it there and if you dont clear it, the next print when you change filaments could get messed up. I just use that adjustment to figure out the extrusion factor to put back into the slicer.
sinneD
ps: I have both original Bondtech and clone BMG's and QR's. Its a night and day difference in the real deal. At least buy the real gears from Martin. You wont be sorry.
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@deckingman said in Help to setup BMG clone extruder:
@DocTrucker Each individual has their own opinion of what is right and what is wrong and it's not my place to make moral judgments. But at the same time, I have my own set of values by which I run my own life. For that reason, if a person buys a clone then I personally will not offer to help them, because to do so would be helping the vendor or maker of the clone, which is against my own personal principles.
Nothing personal and I respect your choice, but im afraid it is a total oxymoron.
On the one hand you say
"it's not my place to make moral judgments"
Then on the other you say
"I have my own set of values by which I run my own life. For that reason, if a person buys a clone then I personally will not offer to help them"
That by its very definition is a moral judgement................
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I Have relayed before I purchased a cloned Duet 2 Wifi, from Fsytech I think, purely for comparison purposes, it is not used in a live machine, it's still in a box unused to this day
I also offered to donate this clone to the Duet team if they wanted to dissect it, but they either missed the post where I made the offer or they chose to not take up the offer.
I have a total of 18 genuine Duet-2 boards (7 in home machines & 11 at work) plus 1 Duet-3 so im quite comfortable that I have done my part in supporting Duet3D.
From looking at the two boards, the clone beside a genuine under a stereo scope there is a few subtle differences, enough differences to see that corners have been cut and its a good idea to stick with a genuine board.
A pic of the clone beside a genuine board (and the offer for me to ship it to Duet3D still stands if they want the board for comparison purposes)
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@DocTrucker said in Help to setup BMG clone extruder:
The margins on Bondtech are more stark,
Maybe, maybe not. The cost of doing business in Sweden is horrible, particularly if you are a small company. Many years ago, I looked at starting my own business here and worked out that for every 10 pounds in my pocket, I would have to charge my customer 40 pounds.
That simply wouldn't fly, so I have remained a wage slave instead.Because Bondtech (I'm assuming these are open source and not being illegally copied?)
Bondtech's designs are not open source.
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@grizewald now your last comment muddies the water significantly!
I did an install for a Laser Melting layer manufacturing machine in Switzerland many years ago. Think it was Zhaw or something like that. Nice place but as you say cost of living is crazy. Pizza and a beer out cost me more than a decent restaurant meal bak in the uk.
Running 3 P3Steel with Duet 2. Duet 3 on the shelf looking for a suitable machine. One first generation Duet in a Logo/Turtle style robot!
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@deckingman said in Help to setup BMG clone extruder:
Each individual has their own opinion of what is right and what is wrong and it's not my place to make moral judgements.
We live in very judgmental times. The Puritans are back but with different religions, and the virtue signaling race pushes people to the extremes.
It's refreshing to see the tolerance, respect of different views, and commonsense in this small community.
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@DocTrucker said in Help to setup BMG clone extruder:
@grizewald now your last comment muddies the water significantly!
I did an install for a Laser Melting layer manufacturing machine in Switzerland many years ago. Think it was Zhaw or something like that. Nice place but as you say cost of living is crazy. Pizza and a beer out cost me more than a decent restaurant meal bak in the uk.
Sweden and Switzerland are two very different countries!
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@grizewald indeed. Scan read fail.
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@sinned6915 said in Help to setup BMG clone extruder:
@TPJensen How are you fairing so far?
It is up and working now and makes good prints... my Esteps was 368.21 that looks spot on in the prints. Some filament as you say is a bit differnt in my simplify3d. 0,99 - 0,95
I love the Duet2 wifi board and paneldue in my mind the best upgrade I have. On PanelDue there is only one thing and that is baby steps can only be done when the printer starts. I know I can do it on webcontrol just it could be nice to have the option.
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I bought the gears and Printed my own,which I felt was more in the open source spirit.
