LowRider 3 CNC - control box case for BTT SKR Pro 1.2 board and a BTT TFT35-v3x, NON-E3 (such as v3.0.1 etc) touchscreen (remix v1.3.1)

Quick heads up:

These remix designs were somewhat “intended” for the case being positioned on the X-max end (right side) of the LR3 gantry. If you are planning for placing it on the X-min (left side), then the only concern with simply sliding the case to the other side is that positions the cooling fan intake holes toward where the cuts happen instead of facing outward. Perhaps the easiest work around is to flip the fans so they pull air out of the case instead of pushing air into the case. Previously I had mistakenly suggested simply mirroring the printer parts, but I had not actually done it, and when someone tried, they pointed out that mirroring does not handle reorienting the openings on the lid for the ports on the PCB(s). Sorry for any confusion.

Note: in addition to this revision, there is another edition that accommodates “E3” TFTs (which have their knob and reset button located below the touchscreen instead of beside it). The latest E3 version has the added feature of being able to mount facing toward either X or Y. (Note: facing toward the X axis is the default LowRider 3 positioning, while facing toward Y is helpful for those who swap their X and Y axes, as I have done). Here is a link to the latest E3 version:

LowRider 3 CNC - control box case for BTT SKR Pro 1.2 board and a BTT TFT35 E3 touchscreen (v1.2)

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This remix was requested by @kockie-nl on the V1 Engineering Forum , to accommodate a non-E3 version of BTT TFT35-v3x. The proper and perfected fitment of the various holes and ports was accomplished by collaboration with @kockie-nl, via feedback and helpful pics. Many corrective nudges were implemented.

If you print this please take a few pics and post your make here.

Some details on various revisions are explained on the forum .

Some pics of printed TFT holder courtesy of @kockie-nl.

This remix has changes to the TFT holder and Reset Button for only one purpose: so that a non-E3 version of the TFT can be mounted and used.

UPDATE July 7, 2022 - “Low Fat” Base option

What’s this “Low Fat” thing? This is my version of a brainchild of aaron GitHub on the V1 Engineering forum. It’s a more efficient version of the base with some “fat” trimmed off. It maintains thickness and strength where needed, but saves 33% of the plastic and shaves 25% off the print time. It also has a new version of hanging bracket, inspired by the work of Dan @SupraGuy on the V1 Engineering forum. This hanging bracket is split in two so it can accommodate your temporary struts while you’re starting out with your LowRider v3, and then graduate to your permanent struts once you get them cut and installed. I’m offering both the original base (v 1.2) and the new one (1.3.2) so you get to choose. And both are available for 1/8" thick struts or ¼" thick struts.

Other details remain pretty much the same, so below is a copy and paste from before, with minor tweaks:

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Gorgeous printable case for your LowRider v3 CNC , if you're using an SKR Pro 1.2 board and a BTT TFT35 touchscreen (options for both E3 and non-E3 are available).

Many thanks to Ryan at V1 Engineering for his design genius and gracious generosity in sharing his work with us all. For those whose LowRider v3 MPCNC has or will have a BTT SKR Pro 1.2 main board and a BTT TFT35 v3x touchscreen, I offer my remixes of Ryan's blank control box case CAD file. This case may fit other SKR boards, depending on dimensions. Check before printing. It may also be remixed to suit other SKR boards.

Features:

- NEW (as of July 7, 2022) “Low Fat” Base option. See above. - NEW (as of July 6, 2022): support for non-E3 TFTs (by using this edition) - In another edition (not this one): support for facing the TFT toward X axis or Y axis without having to reprint any additional parts. - Support for either 1/8" thick struts or ¼" thick struts. The original base has a “mounting” rail on the back that is sized for struts cut from 1/8" thick hardboard. What about those who cut their struts from ¼" plywood or ¼" hardboard? There is now an alternate base for that too. - Support for cooling fans — designed for two 40x40x10 fans. I use these quiet fans from Noctua: NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) - Snap in place feature — this remix keeps the original screw hole from Ryan's design, which allows the lid to be fastened in place on the base, but my design also includes a new snap in place feature. I love it, and have not bothered with a screw. - Access ports — for the SKR's USB ports and mini-SD card slot, and for the TFT touchscreen's SD card slot. - DC power connector port — the base has an internal “sled” to hold the female power connector, and one of the printable parts is a little bar to screw in and clamp the connector in place. My LowRider kit from V1 Engineering came with one of the connectors. If you need more, these are available on Amazon . - Ample room for wiring and power connections — with options for running wires in from below the board or above it. I recommend below, as it minimizes chances of something getting tugged loose while sliding the lid in or out. See video (above). Details of my upgrade of a LowRider v2 to v3 are available here on the V1 forum .

Print and Assembly:

- Print the parts as oriented. No supports needed, assuming your printer is capable of a decent amount of bridging. - Use four (4) M3 x 8mm screws to mount the TFT to the TFT holder. - Use four (4) M3 x 8mm screws to mount the TFT holder to the lid. - Use two (2) M3 x 8mm screws to attach the clamp that holds the DC connector in place. - Use eight (8) M3 screws of an appropriate length to attach your two cooling fans. Change log:

- May 4, 2023, 12:25 am (EST): revised two of the bases, “1.Base v1.3.2 - A (for one-eighth inch thick strut).stl” and “1.Base v1.3.2 - B (for one-quarter inch thick strut).stl” to set their screw hole diameters all to exactly 3mm, based on feedback from V1E forum member @CNCMaker. Thanks for the helpful input! - April 30, 2023, 7:30 pm (EST): revised the reset button and further revised the TFT holder to improve things, based on additional feedback from V1E forum member @CNCMaker. Thanks for the helpful input! - April 29, 2023, 9:45 pm (EST): revised the TFT holder to better align the SD card slot and the USB port slot, based on feedback from V1E forum member @CNCMaker. Thanks for the helpful input! - April 29, 2023, 4:45 pm (EST): revised the TFT reset button to accommodate changes made to TFT holder on April 28, 2023, as suggested and described by @3DMaker_446902, in the comments. Many thanks for their helpful input. - April 29, 2023, 4:30 pm (EST): revised the TFT holder to make the screen window narrower by 4mm on the knob side, as suggested and described by @3DMaker_446902, in the comments. Many thanks for their helpful input. - April 28, 2023, 6:30 pm (EST): made tweaks & improvements to the TFT holder, as suggested and described by @3DMaker_446902 in the comments. Many thanks for their helpful input. - July 6, 2022, 12:00 noon (EST): corrected oversight of leaving off access holes. - July 7, 2022, 9:25 pm (EST): add “low fat” versions of the base for both 1/8" thick struts and 1/4" thick struts. The low fat versions save 33% of the plastic and shave 25% off the printing time.

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