From my need to remove weight off the carriage, and lack of high quality printing, I decided to move to J-Head extrusion and the results are amazing. I have only print the belt holder in the picture at .15 with ABS. I wonder how it will print at .1 or at .06. Currently printing the Eiffel tower at .15, is a hard print and so far is up to expectations.
Update: By mistake, I uploaded an earlier version and not the finish version of the belt holder 1. Correct one is uploaded.
- Removed IDW file (Inventor) and replaced with PDF
- Added back plate with 18mm inductive sensor mount.
USE TOUCH BUILD PLATE FOR SUPPORT ONLY.
Remove the small support built behind the fan receiver (be carefull, do not cut the walls). do not have to remove the support inside the fan duct.
After lots of considerations and reviewing of so many available options for the Anet A8, I decided to create my own design taking into account other persons ideas and this is the result.
I'm really satisfied with the upgrade. Parts finishing is almost like from molding.
Also besides upgrading to my design, I decided to remove the anti-wobbling from the top of the threaded rod, Reason: The 2 smooth rods and the two threaded rods must be perfectly parallel and aligned perfectly in the same plane and is not the case. that means that if the threaded rod wobbles and I restrict its wobbling movement, the threaded rod will excerpt pressure on the smooth rods, e.g, if the top of the rod wants to move to the right, if restricted, will impose pressure to the left on the smooth rods.
8 M4 .7 x 12mm original socket head cap screws
3 M4 .7 x 12mm countersunk flat head phillips screws
2 M4 .7 x 40mm socket head cap screw
1 M4 .7 nut
1 M3 .5 x 20mm socket head cap screw for fan.
2 M3 .5 x 10mm socket head cap screw for belt holder.
3 M3 .5 nuts ( 1 for fan and 2 for belt holder)
1 - Insert a M3 . 5 nut in back of plate before installing the belt holder. install belt holder.
2 - Attach carriage plate to 2 top bearing blocks with 8 M4 .7 x 12mm screws
3 - Attach carriage plate to lower bearing block with 3 M4 .7 x 12mm countersunk screws
4 - Insert fan in built in fan duct and secure with one M3 .5 x 20mm screw
5 - Remove heating element from J-Head heat block and insert in opposite side.
Note: After all was installed, I had clogging nozzle problems and after many do's and undo's and attempts to fix the problem by elevating temperature top no avail, I finally realized the the heat block furnished with the J-Head extruder is too short and a total of 1/4 lenght of the heating element is out of the block (1/8 each side) and that means 1/4 of the heat generated goes to air instead of to the block, so I made my own block (drawing included) and after that: Problem solved!!!!
The belt holder picture is my first print after upgrade.
I'm including three versions of the carriage plate:
Plate with built in fan duct only
Plate with built in fan duct and mounting plate for Anet prox. sensor
Plate with built in fan duct and mounting ring for 12mm prox. sensor
All plates have a built in PTFE tubing guide and 4 tabs to secure wiring with zips
Also include a Extruder motor mount for left side and 2 versions of belt holder.
Make your choices and happily print.