Relocating PSU (too hot?), How do you secure Z frame?
My MK2s is in an enclosure. About 3 hours into the provided bearing print on the SD (210 extruder 55 bed) the ambient temp is around 32 celcius inside and the PSU Stainless outer feels hot to the touch. Can't tell how hot, because our infrared temp reader is not available at the moment.
There is no circulation fan in the enclosure. Just 2 little holes in the backplate (top) about 2cm to arrange the lighting wires and one 3cm in the bottom for the power supply.
Now this is just printing PLA, what when I want to print ABS. The bed would be a lot hotter and that means everything else gets hotter too.
I read on lot's of forums that you can easily relocate the PSU, but its supposed to secure the Z frame.
I can't seem to find what people did to keep the Z frame secure.
Any thoughts?
Re: Relocating PSU (too hot?), How do you secure Z frame?
I used a blocked of wood roughly the size of the PSU. Is very low tech tech, but it does work.
Re: Relocating PSU (too hot?), How do you secure Z frame?
Ha that's badass!
One could also print a support, but I was kinda hoping someone already did 😀
Re: Relocating PSU (too hot?), How do you secure Z frame?
I am also looking for a support arm after relocating the PSU. My attempts to make one are.... unimpressive.
Re: Relocating PSU (too hot?), How do you secure Z frame?
The Mk1 Prusa didn't have a support o the aluminium frame at all and that seemed to work ok...
do you actually need a support or are you just thinking you need a support...
If so, here are a few designs, I know there are more, but I can't find them at the moment.
regards Joan
http://www.thingiverse.com/thing:1428766
http://www.thingiverse.com/thing:559360
http://www.thingiverse.com/thing:1244055
http://www.thingiverse.com/thing:624383
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
Re: Relocating PSU (too hot?), How do you secure Z frame?
These are great but I was looking for something I could print to use the existing PSU/frame mounting holes.
The printer is currently fairly stable but over long periods of time the motion may cause issues. Preventing any wobble to begin with is my goal.
Re: Relocating PSU (too hot?), How do you secure Z frame?
I left the power supply where is it and added a near silent fan to it.
The power supply has survived through an Australian Summer with the ambient temperature in my garage often getting close to 30C. In the enclosure, it was mostly over 40C hot while printing Polymaker PC-Plus, Nylon, PC.
I used bed temperatures up to 120C regularl, with nozzle 270-295C, which has ruined the PEI sheet and the print bed, but the power supply has not shown any signs of trouble.
Also consider what Prusa say it's like in their printer farm: Maybe about as hot as it will get in your enclosure, and I don't recall reading that they use any extra fans on the power supplies.
Why waste the heat? Don't you build the enclosure to provide a warmer environment?
With active fan cooling, the components probably stay cooler in a 45C environment than they would in 25C without cooling.
There are additional 12V outlets under the PS cover which you can use for powering the fan.
Forget about the IR thermometer, it does not work on shiny surfaces.