AM8 Electronics Case with Dual mosfet by CPT_Spekkie

Last crawled date: 3 years, 1 month ago

Electronics case for the AM8 frame
For my AM8 frame build i was looking for a nice case to house the electronics. As the AM8 frame is pretty new and i didn't like the old versions that were created for the original Anet frame i started work to create my very own design.
This case has 2 versions, one for the standard Anet board and one that has the screw positions for a Arduino Mega 2560 with RAMPS board. The lid is for both versions the same.
The USB port of the Anet board is accessible through a cutout in the top part of the frame.
I modelled the ventilation holes as slots to complement the design of the Meanwell power supply cover that was created for the AM8 frame. Although i will create a cover for my own power supply, i liked the slotted design more than an hexagon cutout.
Notice: The screenshots of the case do not show the position on the frame correctly. Because the Z stands of the AM8 frame are not in the correct place in the picture. The case will sit flush between the Z upright beams and the back frame profile. So any cables running through the back frame profile will exit under the case and can be routed directly into the case.
For the lid to lock in place, you can place an M3 nut into the little cutout in the case. Then use a screw or a thumbscrew to secure the lid in place. If your screw is to long it will simply pass out of the back of the nut holder, it has a back hole for this.
Also to screw the mosfet and board in place you can place the bolt through the hole in the case from the outside, then place the component and thread a nut inside the case on the bolt. This way if the bolt is to long it will not stick out the back of the case. You should be able to reuse the M3 screws of the original Anet frame for this.
Update: May 19th 2017
Made a slightly different version of the lid. This one prints a few hours faster and needs less material. The slots are 2mm thick and the frame of the lid is still 5mm. It now has 4 alignment strips to be sure it fits nice with the case.
Only thing is, this now needs to be printed upside down and needs support for the clips on the right side with which the lid clips into the case.
So both versions are included now.
Second Update: May 19th 2017
As per request of PapaJohn88 i lowered the Ramps position down by about 10mm, to make space for the LCD ribbon cable.
Update: May 20th 2017
My print completed, so finally am able to show you pictures of the case in real live! Also found out that some tolerances were just a bit to tight. Like the nut holder for the lid lock. Yes the nut did fit (mine is in) but i am not able to get it back out. So i updated the files and made a little more space thickness wise for the nut to sit in the holder.
Also i made the taps of the lid a tad less thick, this is to compensate for the hole slots in the case in which the taps sit. If you have a little sageness in the bridging of that part, is now should just fit without adjustment.
Lid is printed and came out perfect. Support from the taps were easily removed and it fits nicely. The 1.1 and 2.1 versions will fit even better at the taps side. (i may need to file a little bit on my print for it so stay better in position.)
Overall i'm super happy with the results, a nice finish, sturdy case and lid and finishes the overall look of the printer.
As promissed i have included the Fusion 360 design files. the AM8 ANET file for the Anet board case and the AM8 RAMPS file for you guessed it, the RAMPS case. These files include the whole AM8 frame. But beware, there are modifications to the power supply mount, so if you need the original of that, use the file of Pheneeny.
Update: May 22th 2017
PapaJohn88 found out that the RAMPS screw positions were compromised when changing the design the last time, and therefore mounting the board would fail.
And indeed the bottom screw positions where off by about 2mm's which is unacceptable. So i fixed that and replaced the files here.
Update August 13th 2017
Finally i got around to update some of the suggested updates to the case.
The RAMPS version is updated with the suggestions of PapaJohn88. The board is moved to the right 9mm and has longer standoffs. Also the slots behind the second mosfet have been centered now. This allows you to route the USB cable from the Arduino between both mosfets.
For the Anet board there is now a additional version for instead of the 2 smaller mosfets, to use one big mosfet. This per request of TwinToe, but made sense that more people would use this setup. This is the mosfet with the big heatsink as seen on Amazon.
Update August 26th 2017
Now there are two remixes available for lid's with a fan attached. Personally i like TwinToe's design and this one would have been almost the same as i had planned myself.
If 80x80mm is not big enough for you, then there is Vaniac's design, that one attaches a 120x120 mm fan to the lid. Also a very good design, but not completely in the same style as the case, but function over form is what matters here.
So i would like to thank both TwinToe and Vaniac for sharing these remixed lids with the community.
PS, You want to install a Raspberry Pi on the AM8 frame in a nice case? Check out the remix from Pokelia! Its a Rpi case in the same style as this electronics case.
Update June 10th 2018
Check out this remix by Jsschlat, Its a complete overhaul of my case with many improvements i should have thought of at the beginning. Consider using this remix instead of the original if you haven't printed it yet. https://www.thingiverse.com/thing:2954741