DollaTek 25a MOSFET DIN Rail Mount

DollaTek 25a MOSFET DIN Rail Mount (LOW PROFILE!!)

Much in the same way as my Micro4 board, I needed a compact, low profile, mount for my MOSFET (yes, this Voron uses a 24v bed, yes it heats up quickly, yes it has a good bed mesh). Due to space constraints, I couldn't position the fan over the top of the MOSFET, so it's mounted to the side facing the heatsink - reminds me of an airboat, haha!

Absolutely loads of files out there for this already, but none met my purpose.

ABOUT THE DESIGN...

Mounting clips are inspired by "DIN Rail Bracket" by Fabian (model no longer on printables), included in the Voron 2.4 stl pack.

"DIN_Mount_BASE"

• Mounting holes are 4.5mm dia with a chamfer on the side meeting the build plate - suitable for M3 heat inserts.

"STANDOFF"

• Gives approximately 3mm of clearance between the mount and PCB for solder joints.

"40mm_FAN_MOUNT"

• PRINT IN ABS - it may be thin, but it has a good flex and durability!!

• Fan mounting holes are 3.5mm dia

BOM

• 4x M3x12mm screws

• 4x M3 heat insert (3x5x4mm)

• 4x M3x16mm screws

• 4x M4 nuts

• 40x40x10mm fan (voltage matched to your printer)

PRINT SETTINGS

• Filament: ABS

• Temp: 265c

• Perimeters: 4

• Infill: 0%

• Supports: No

• Raft: No

• Brim: No

• Layer Height: 0.2mm

• Nozzle: 0.4mm

Print time: 25 minutes apprx.

All .stl files are print ready, just drop them into your slicer, pick your filament profile and send it to your printer.

If printing in ABS I suggest to scale this between 100.69-102.5% depending on your printers tolerances, accounting for shrinkage.

As seems to be the standard these days, I will suggest 40% infill, 4 perimeters as per Voron build specs, but honestly to save a bit of time on prototyping - I went with 0% infill and they're fine - the parts are so small that the perimeters give all the strength.

SUMMARY

Really happy with this, fits perfectly into a very small space, the fan is nicely out of the way of my keystone inserts, all in all - top job!