Anycubic I3 Mega - SD card reader flipper

thingiverse

2018-09-28: V5 a little bit more smooth and stable :) 2018-09-23 ... later :) V4 because this is a work in progress, and I will use this thingi later on as base for a doubleMOSFETholder and a -> cable management <-, I changed the frame "a bit" now one can lay all the cables for stepper motors, temperature sensors, and so on between the original mounts for the SD card reader (if he removed that one cable tie) before mounting this thingi - o.k. the most of the cables, a few cables (like that ones to/from PSU, Y-axis-endstop, and Y-axis-stepper motor) won't fit for the moment ... but we will see later :) the roundings at the "upwards" moved frame parts - beside they're looking nice like the gates of a medieval castle :) - are for better bridging while printing this thingi and for smoothing the cable way 2018-09-23: V3 since I have installed TMC2208 V1.0 stepper motor drivers, I had to rotate the connector plugs on the TRIGORILLA board for 180° this rotated plugs (especially that one for the x-axis) comes a bit closer towards the pcb's edge and collides with the SD card flipper I myself took a sharp knife and did 2 cuts through the existing thingi, but if one does a new print, he can choose if he want the cutout when using TMC2208 V1.0's too - or not :) so I added 2 lines at the very beginning of the scad-file: // Change this to false if You don't use TMC2208 V1.0's and didn't have to rotate the stepper-motor-connectors (expecially that one for the x-axis) TMC2208V1 = true; // in case change to: TMC2208V1 = false; 2018-09-06: V2 in preparation for using this thingi as base for creating a combined SDflipper, Dual-MOSFET-mount and maybe a fan-mount and a cable-management I did a bunch of small changes inside the scad-file for easier mounting, fully use of params a.s.o. ... accidentally erased the V1-files while uploading the V2-files 2018-08-28: V1 first attemp in OpenSCAD, but so far only a raw copy of the TinkerCAD-thingi 2018-08-27: V0 done in TinkerCAD, all not functional necessary parts positioned more or less "by eye" _______________________________________________________________________ because I didn't want to do my first print with a pair of owls, but want something useful for my new printer ... but the cable-chain arrives in a few days, and I'm not sure, the existing thingis for mounts will fit ... hm, a flipper for the SD card reader might be useful enough, and I like to spare that first wrong attemp, to insert the card ... and I won't have any problems with that thingi ... wouldn't I ? downloaded and printed the [Anycubic i3 MEGA SD card flipper] (https://www.thingiverse.com/thing:2759479) (after trying appr. an hour while reading https://daringfireball.net/projects/markdown/syntax#link I give in ... maybe one can give me a hint for writing links in thingiverse :)... erm, ok., seems both barrels of the y-axis got some heavy load and do a curve downwards in the middle of the y-direction ... with some clever tricks, the print was done ... printer off, opened, SD card reader dismounted ... ok. thingi fits on the mounts with light pressure, but the SD card readers board won't fit ... there are some bits and bobs at the board, that collide with the thingi ... so quick decision, to create a new thingi ... and after a few hours learning how to use TinkerCAD ... tada: here it is ... by far not a real beauty, but it fits far better than the first thingi ... as far as I'm a german engineer, it has to fit perfect - let's say like a wet silken glove ... but unfortunately it's more like the iron glove of a knights armor ... as one knows from changing tires, one has to push (or pull for getting it off again) over the longest diagonals: starting top left and numbering the old mounts clockwise 1-3-2-4-1-3-2-4 a.s.o. until it touches the ground or becomes free but because I'm always thinking about, what may come in the next step - and there is mostly common a next one - the new thingi is perfect in 3 ways: - a) it is fixated with all 4 screws - b) the SD card readers board is also fixed with 4 screws instead of the original 3 ones and - c) it sits really tight on all 4 mounts, so it may be a good base for a later to design MOSFET-holder 2 hints for mounting: - a) dismount the stepper-fan-mount from the casing before working on the flipper - I didn't do that and hated it every second :) - b) because the bevelled edge for the M3-screw threads is a little to small, it may be clever, to screw them all 4 in, when the thingi is still free ... then the screw thread is formed into the PLA and the screws may fit ways better one weird fact: the inner and outer wall of three tubes for the original mounts have only very small connection towards the rest of the thingi - maybe, when changing to a MOSFET-holder, I may take a close look on this too ... for the moment it is good for me :)