This is a series 3d prints to seal of the back of the makera carvera from chip ingress.
The files have been updated to reflect the new version of the vacuum that is common with most machines (the prints completely replace the vacuum assembly so it will work on all full size carvera machines)
Instructions found here: https://www.instructables.com/Carvera-Makera-Back-Panel-Isolation-Install-Instru/
one of the parts, the fan to hose adapter is a remix of:
https://www.thingiverse.com/thing:6144088
Print fan to hose adapter, top piece cable grommet, bottom of power input gasket in tpu
The rest of the parts can be printed in your favorite rigid filament. I use PLA with a .2mm layer height
The vac chamber top, and both electronics protection panels need m3 heat set inserts pressed into a few of the holes. See the reference images
Vac Chamber Outside Inlet gets glued into Vac Chamber Top as shown in the images. I use thin superglue, and make sure the glue goes all the way around the connection to ensure a seal. There are two variants of the part, one short and one long. The short replicates what is in the machine, the long gives a bit more material to grab onto if desired
Hardware:
16 | m3 heat set inserts | https://www.mcmaster.com/catalog/130/4201/97171A310 |
8 | m3 10mm socket head | https://www.mcmaster.com/catalog/130/3558/91292A113 |
13 | m3 button head screw | https://www.mcmaster.com/catalog/92095A182 |
1 | m3 countersunk screw | https://www.mcmaster.com/catalog/130/3473/91263A821 |
6 | m3 washer | https://www.mcmaster.com/93475A230/ |
Install instructions:
Start by removing the clear plastic vacuum assembly and disconnecting the hose. Take the fan off the vac assembly and set it aside.
Remove the two white plastic vacuum hose clips on the top of the machine and set the aside for later
On the top of the machine, all the pieces should slot in easily. You will have to move the spindle to the center of its travel and remove the two pistons
either use the supplied screw holes or VHB tape to attach these parts. I drilled and tapped the holes for M5 cap head screws. There will be a gasket on the vacuum side around the bundle of cables that pass into the circuit board chamber.
For the back of the machine: with the vacuum removed from the machine and the back panel still installed place the left and right pieces in from the front and use a pencil to mark out their edges in place. You can then remove the back panel and use these markings to line up the pieces and transfer M3 clearance hole locations.
On my machine I added a filtered fan input next to the vacuum input to provide cooling for the circuit boards and PSU.
Keep the back cover removed for the next steps
BottomOfPowerInputGasket goes underneath metal part where you plug in the IEC power cable/e-stop
With the holes drilled out you can install the power side and center pieces into the machine with two of the bolts from the power supply mount. I used VHB to attach them to the bottom of the gantry. I was originally going to drill and tap holes into the bottom of the gantry, but my drill did not fit and the VHB tape holes better anyway.
The Vacuum chamber piece is held in place by the screws from the old vacuum - do not glue or VHB it down or you won't be able to access the electronics later. Place the flexible fan to hose adapter onto the vacuum fan and attach the vac to the printed part. It will only go on one way and the flexible hose adapter should go down through the printed part in order to vent back into the main chamber.
Plug the vacuum power cable into the board and slide the whole assembly up into position. I loosely place in the top bolt before adding the lower two bolts under the gantry. These three bolts will hold the piece firmly in place when tightened down. Do not use VHB tape on this piece as you will probably want to remove it in the future.
There will be a flexible gasket to go around the two tubes on top of the vacuum where you plug in the hose to prevent chips falling through that interface.
once the 3d printed parts are installed, install the back cover and use M3 bolts to attach the printed parts to the back of the machine.
The author marked this model as their own original creation.