Frame clip and locking pin for Velleman K8200 3D printer
You probably discovered that mounting any accessories on the printer’s frame is a bit inconvenient. It is a good idea with these square nuts slid in the frame but unfortunately if you want to add something after the printer is fully assembled – it can be very ungrateful.
Some of the areas are easy to be modified, like the vertical aluminium profiles – it requires just removing the top caps. However, some areas are very hard to access (like the Z carriage arm) – you would need to tear the printer apart to get into the groove in the aluminium profile.
I had to figure out how to hang something on the frame without disassembling the printer or drilling holes in the frame. The list below shows what I would like to change/add to the printer:
- mounting the controller board on a separate base (probably with some cable tights)
- mounting the power supply on the side/back of the frame
- mounting the fan properly (it is very wiggly by default)
- adding a LED lighting (probably PWM controlled)
- adding a RaspberryPi to control the printer remotely
- adding a webcam to see the printing progress
- adding an extension lead where I could insert all the plugs (printer, RPi, LEDs)
- mounting the extension lead to the frame (the idea is to have the printer portable, with only one cable sticking out with the rest mounted securely)
- adding a filament cleaner
- adding a dishwasher (or maybe not, it would be too much for the frame :))
Here is a cross-section of the aluminium profile:
http://4.bp.blogspot.com/-taC3EYTEEY...00/profile.jpg
My first thought was to design a locking pin that would slide through the slot and then lock if rotated 90°.
After some measurements I came up with this bracket and pin:
http://4.bp.blogspot.com/-eRRNs52tQ8...et_pin_top.jpg
http://3.bp.blogspot.com/-GUPlUJ1pBC...erspective.jpg
I have created rectangular holes on the sides of the clip to allow the pin slide through.
Below are the printed objects.
http://3.bp.blogspot.com/-tMy9N8Kn3A...acket_1_SM.jpg
http://2.bp.blogspot.com/-8FzuOdY-W7...acket_2_SM.jpg
http://4.bp.blogspot.com/-R7R8G4hSAP...600/Pin_SM.jpg
A flat M3 bolt + washer or flat M4 bolt (like the one below) can be used.
http://1.bp.blogspot.com/-kBq-wBxe2l...00/M4_bolt.jpg
To download the files - visit my profile on Thingiverse (http://www.thingiverse.com/ljwinkler/designs) or use direct links below:
Cheers,
LJ
