KoenVanduffel / CR-6_Strain_Gauge_Mounts

Creality CR-6 SE and CR-6 MAX direct drive mounted on the strain gauge design series
GNU General Public License v3.0
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MicroSwiss Fan Mount / Daughterboard Mount #4

Closed leesafur closed 2 years ago

leesafur commented 2 years ago

The MicroSwiss fan mount hits the X axes tensioner end piece but still passes by. Probably only 1mm of clearance is need to solve this. It also has the same issue as the last modification to the stock hotend. Where a small cutout was added because some 5015 fans have rather large clips to close the body that were interfering with the mount. Would also like to request that the 2-M5 holes for the fan mount resized smaller. This will allow us to omit the nuts currently needed and help reduce moving mass. It would be nice to see it lightning up significantly as this part is huge and adds a lot of weight to move around. lol cable clips added to hold the fan power wires would be great too.

If we reduce the 2-M3 hole sizes on the daughterboard we can omit the currently needed M3 nuts. Also if you look at the photo, you can see that the daughterboard could use slightly more clearance from the extruder tensioning nob. It could also use some sort of cable strain relief.. I tried designing one but I suck at it.. Take a look at the zipped STL. The idea was to keep it light and it did work but was to flimsy.

First time posting something like this... I apologize in advance if this is the wrong way to report my findings. Thanks Lee

IMG_3629 IMG_3630 IMG_3631 Daughter Board.zip

KoenVanduffel commented 2 years ago

Well I am not too processioned on GitHub either so that first time posting is surely OK :).

You point out a few issues that are tough to improve. The daughterboard can hardly be moved as the stock thermistor cable is too short and if I move it backwards it will collide with the X endstop (I had it a few mm further originally but didn't work. The lever of the extruder I never use, I just use the load and extrude feature of the firmware.

The fan mount touching the X-tensioner was a problem I though to have solved but apparently there are cases where the clearance still isn't enough. I will add a little more in the next revision.

As tot he weight I am still developing/finetuning the shroud itself. Once I have a final I will try to shed some weight but not much will be possible without compromising stiffness (the top back corner can easily shed some weight, the backplate can hardly be made thinner without loosing stiffness).

The nuts are hard to remove I am afraid. The back is only 3mm thick that would be all you get to hold the screws. I started with hot melt inserts but they come loose after only a few times dismantling (which I am doing as I am developping maybe this is not a general issue).

leesafur commented 2 years ago

You're right about the daughterboard... I no longer need to put my fat fingers in there now that I have a load and unload button to use lol. I'm seriously considering moving the daughter board off the print head all together.

I trimmed up the fan shroud by 1mm on 3 sides and made the bolt holes smaller. It has about 30 hours on it now and is holding up well. The slicer had a hard time with the file as its hacked up pretty good now but I will attach it so you see what I did.

I'll go ahead and close this issue as original works as intended and wasn't a problem until I added a wiper bar at x252. Thanks for all the work you've put into this as I now have a printer that prints petg flawless at 80-100mms with a draft quality at twice that speed IMG_3636 Microswiss_Fan_Duct.zip

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