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CR-10 Stock Direct Drive Conversion

by hpiz Feb 28, 2018
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Well I thought this will be the solution for my extruding problem, but unfortunately no. You defenitly need an extension cable to reach the full 400 height. The connector of the motor cant face down because it will collide with the support. Also that angeled cut out for the motor doesnt make any sense like this, you should just make a biger hole for it. So I had to drill out the hole for bigger what wasnt easy because its not a hole more like a cutout so it shifts the drill in that space so also stable drill is required. Also because the hole is so tiny, you must remove the extrusion gear to put the plate on.. it just need a bigger hole.
Glueing the two parts together was a bad experience since they didnt angeled in perfect 90 degree in the end. At this point maybe I was the innacurate so If you making it, mount the plate first to the motor. This will give you a better overview while glueing.
I could fix these problems but I think it doesnt worth it. The motor is pretty heavy to add this on the X. It was not designed to carry this extra weight so it will wear down the rollers much faster. Also for the same quality print result you will have to print a bit slower because of the extra weight.
I am sorry but this was my thought. I would really like to make it like this, but it makes too much problem for me.

I was sorta waiting for someone to complain about the cutout. I added it late in the design and its intended purpose was only to assist the installation of the lower teflon tube to allow swiveling of the entire assembly. I would consider making the hole bigger but I don't think the stiffness will be there if I take it all the way to the 22mm circular case extrusion on the stepper. I agree the size of the filament drive gear is a good size so at least that wouldn't need to be removed during service/install. Will be done.

As far as joining the pieces, I'm not sure I fully understand what your situation was, I have printed 4/5 of these and have had no trouble gluing the pieces together and clamping with a pair of vice-grips. Perhaps the bed was not accurately leveled when you printed the motor plate, that would cause what you are saying. Obviously the effort you put into an accurate print is usually what you'll get out.

This idea carries into your comment about the x axis. I think everyone should know this. You are correct. However, the downsides of using a direct drive on the CR-10 are gonna be there, like you say, it was not designed to drive the weight, but it's up to us makers to make it work for our needs. (I wouldn't be too worried about wheel wear, that's an expendable part like the belts, it is not designed to last as long as say the 2020 extrusion frame is)

While using this setup I have slowed my printing and travel speeds/accel/and jerk down to compensate for the added load. Every printer is gonna be a little different so you may have to slow more or less than what I have, but it's the price to pay to be able to open up this printer to a number of different filament types that are incompatible with a bowden setup on top of a better performing print when fully calibrated (the delay of starting and stopping extrusion compared to a bowden setup has got to be close to a 100 fold faster for stiff filament not to mention retract performance).

I'm sorry it didn't work out for you, if you have any other suggestions on how I can make this better I am all ears man.

No its totaly fine! I just wanted to share my experience. Offcorse it cant be good for everyone. Thank you for making this.

A possible addition would be a model that also works with the E3D V6? Looking forward to your design!

I don't have one yet so I'm not sure how incompatible it would be. This one won't touch or utilize the existing head (except the one part just there under the new mounting bracket), only the mounting bracket and the roller bushing.

Does the E3D inlet not line up in the same position as the stock hotend?

My E3D is in the mail, I can let you know if it lines up when I get it, or maybe someone else that sees this can chime in.

Did it line up?