New Printer Build in Boise ID

Modifying the MP3DP for 300X300X300 Build Volume… Starting with full CAD model creation, and in parallel, purchasing the part i know i will use, as well as printing some parts

Planning on keeping the same extruder that Ryan had spec’d. Also keeping the linear rail profile the same, just longer rails, plus a rail backer for the extruder rail.

Using Onshape to remodel, making a fully kinematic model, so if any of you use Onshape out there and are interested in a full model (kinematics, complete BOM, etc.) let me know… Working on developing a BOM that includes; cost, MFG info.

Printing the printable parts right now (using the GEEETECH MIZAR S - this printer was 250$, has a great build volume, and good quality printing for the price, would highly recommend for someone looking for a cheap printer that yields good results.


So building a V4… did you see V5 is in development? It will have more milled parts though, so not as many printed items. I am still finishing a nearly complete V4. It will be a nice machine once klipper is sorted and the tuning is complete.

Yeah, V5 looks really interesting. :slightly_smiling_face:

I changed your topic to not have all caps, I don’t want to be shouted at. :yum::kissing_heart:

The V5 may get me to replace my V3 (Serial number 2.)

My v4 can keep going for a while. I may be forced to retire my old printer, I don’t use it so much anymore because it’s noisy. It’s pretty uncommon for me tk have 3 printers going anymore, and I could maybe be more patient when the case arises that I have that much printing to do…

Those look like good quality prints. The v4 printer is pretty good. I’d have liked better ability to build with milled panels rather than extrusion, but that’s maybe just me.

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Just means another project if I build the new one too…

This will be my first 3D printer I’ve built myself so know I will learn alot.

This printer looks larger in CAD then it does in reality. Just got in my extrusions and they look danty.

Lol, not yelling, I’m used to doing all my work in all caps, I do a lot of engineering drawings for my job. But will keep that in mind for future posts, that way people will know if I’m yelling.

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So I’m laying out my pullies and such, and I noticed the following… Maybe I missed something but the “Front Left Corner Block” toothed pully does not line up with the “XY Bracket Left” smooth idler.

I have been using a 2-3mm offset from the face of the stepper, which works perfect on the other side…

This is an image from Ryan’s Model… The bottom looks to line up, but the smooth idler surface is 1.5mm lower than the stepper

It seems like this works when the pully is flipped

You can see in this image I flipped it 180 from how you normally orient these.

Am I missing something, like is this one supposed to be flipped to work?

Yep, this way …

Belts on right side are higher, so need to flip pulley for that one.

This is the belt layout if you flip this pully… FYI, this is the same pully that Ryan has made available in the V1e shop. This is also the same stepper dimensionally as the one ryan has available in the shop.

What fan is shown here, tried to get the part number off the images but could not find it…


I just grabbed a generic one… but wondering what experience people have with the quality of the ones that they have purchased, weight, speed, ect. Also looks like there is only one attachment point for it, has anyone had vibration issues with the fan while the head assembly is moving?

Good questions, curious what others recommend. Personally tried a few different 24V “5015 blower fans”, tried looking for highest CFM rating and current draw. No idea what vibrations these introduce. Don’t think I ended up with an pro/excellent fan, but seems good enough. CPAP tubes to the hot-end seems to be what the speed demons like to use.

If you’re planning to fully enclose, consider checking how close a front facing fan ends up being to the front door/panel.

So this MP3DP I’m calling the Katana, after my dog. Setting it up for a 300mm X 300mm X 400mm print volume… Will be fully enclosed, which I believe I will need anyways to maintain the rigidity of the frame (so structural like enclosure) for an accurate print at this size, may need to reinforce the frame with more 2020 or upgrade some of the frame members to 2040, will figure that out once i start securing it all together.

I’m working now on spec’ing a headed bed, either a kit, or putting one together myself using a silicone heating pad to produce the heat, not really sure which route I should go.

I found this hot bed kit on amazon…

would this be a good option for this printer using the SKR board? Also what material are other making this tri attachment plate out of, im assuming my hot plate attached directly to this, so want to make sure i dont use a material that will warp over time from the heat.

Typically the hot plate is spaced off of that, but this is where each printer is a little different. My printer has a tshape of extrusion with plywood mounted between it and the heated bed.