Printing Bogdan's bearing blocks
By anar on 22/01/2011, 18:39 - Spare parts - Permalink
The way the bearing blocks are held on the original kit design is not ideal.
Bogdan has designed a set of spare parts to replace the bearing blocks.
So I'm gonna print and use them...
These bearing blocks are divided in 3 set of pieces :
In order to be mounted, the bars holding the bearings must be made free to let you introduce the bearings into these blocks.
But I don't want to have to unscrew all the bearing holding bars.
So I decided to take over Bogdan's original designs to adapt them.
I converted Bogdan's STL into 3DS with MeshLab and then imported the 3DS files in SU.
I then redesigned the parts over Bogdan's design.
The idea is simply to cut them in 2 halves, the advantages being :
- they will be easier to mount
- they will be better printed (no overhang)
Here are the result in SU (all the bearings are not showed here) :
"X Front bearing block"
"X Back bearing block"
You can note that I have modelised the little support for the screw place here.
I also made it bigger because the original design was not fitting correctly.
This small support can be very easily broken off when the print is finished.Why did I modelised a physical support instead of using Skeinforge's support feature ?
For small pieces like that one I never print any raft.
But Skeinforge has problems resolving the conflict "Raft=No VS Support=Yes".
And here they are mounted on the machine (not all showed, there are quiet a few of them) :
Updated 26/01/2011
At the time I've been writing that post I had not discovered Chylld's Derafter yet...
This little program's functionality is to get rid of the raft layers in a .bfb file.
That solves the "Raft=No VS Support=Yes" conflict.
Another great Chylld's gift to the reprap community !
You may download these parts from here.
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