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Hi,
I am going to run my RAMPS 1.4 set-up on 24V, I read the tutorials / seen the youtube who-tos. But I have an idea. I need to remove D2 from the RAMPS board because that feeds the feeding voltage, in this case 24V, to the Arduio MEGA underneath. 24V being too much, leave out D2 and give the MEGA it's own power source. OK. But if I loose 12V over D2, there is 12V (or there about) left for the
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HugoW
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Controllers
Yes, I still play with Lego Duplo:
The Y-slides will have the belt wheels on top, I need the belt tensioners to come in and be fitted before I can position the wheels. With the set-up on the table like this, I also thought up a way to fit the end position switches on the X axle, they will be on the X slide. Putting one on each Y-slide will give a lot more moving wires, now I can keep it all
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HugoW
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General
They came highly recommended on another forum. I'll give them a shot at 24V with the NEMA23s on the XY, if it doesn't work the A4988s are easily sources. BTW, my Arduino Mega and RAMPS 1,4 arrived, with broken fuses. Bummer. Should fix that...
Hugo
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HugoW
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General
Still need to press in the sliding bearings and cut off the lever a bit more, but basically it's done:
The belt mounting / tensioning devices will go on top of the bearing housings, at the front of the bearing housings threaded holes are made to fix the product cooling fan and shroud to.
Hugo
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HugoW
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General
I just found the motors are pretty much identical, but one is a 4 wire and the other 6. So if I wire the 6 up as a 4, they are identical. Great!
Just bought a lot of mechanical bits and bobs at Banggood to make the X-Y set-up, and ordered 5 TMC2100 drivers from Alixpress. Now I just have to wait another three weeks for the lot to arrive and I can take the next step in building the thing. I'll po
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HugoW
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General
Yeah, I'll buy two so I can adjust all four ends. Bit overkill, but easy to fit.
Another question; I was just given two NEMA 23 motors. They identical in physical size and steps per revolution, but have a different maximum amps rating. I think I could use those to drive the X and Y system on my CoreXY, if I stay below the motor's rating. Which I will do anyway because it is way above the driver'
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HugoW
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General
@DjDemonD; that's a nice option but I cannot 3D print, yet. I found these triggered by your post:
I think I can cut off the side things and use it.
Cheers,
Hugo
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HugoW
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General
Subtlety is not your strong point, is it? I use Igus sliding bearings, combined with Igus hard annodized rods. Proven combo. 2x 500mm steel rod is 886 grams, same in alloy is 307 grams. That is 579 grams less to move about when moving the X axle in Y direction. That is a saving in energy so an enhancement in accuracy for the machine. The Powered hotend and sled weigh too little to make the alloy
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HugoW
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General
Thanks for all the input. I've just bought aluminium rods instead of the steel ones for the moving X axle, reducing weight considerably. To keep things simple, I plan to use these:
Any comments? I like it to be spring loaded as it keeps tenstion, but I wonder if it is stiff enough.
Cheers,
Hugo
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HugoW
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General
Thanks for all the info. I sort-of scrapped the tooling plate because of the weight. I was calculating 1/2", not 1/4", and I was still working on a Y-axis moving bed design when I considered the tooling plate. Hauling that about would not be sensible. I never considered it again when choosing the CoreXY-like design. I guess it's back on the priority list.
Cheers,
Hugo
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HugoW
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General
Thanks for all the replies. I answer chronological:
@Origamib; thanks, I understand what you mean.
@cozmicray; I indeed design around stuff I can get my hands on easily / cheaply. There are heated beds out there 200x200mm, four would make a 400x400 bed. But I am planning a glass bed with nichrome wire and Kapton tape heating. I have made heaters before for other purposes. It might even become a
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HugoW
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General
Hi,
first post here, I've been lurking a while... I am building and designing-on-the-go a 3D printer with a workspace of 400x400 bed, 200mm Z axis. The bed will move up and down like with a core XY, X and Y axis on top of the machine. I am in doubt about the drive of the X and Y axis. I have found the CoreXY drive system, but I could also drive the X axis with it's own motor traveling with the Y
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HugoW
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General
Page 6 of 6
Pages: 23456