@ Nicholas
I tried to eliminate play by press fitting the aluminum tube in the shoulder and machining a land on the aluminum tube for the bearing inner race to rest against. The installation is simple, I slightly pried open the fork and pushed it over the aluminum tube until they snapped into place.
The design of the arm is not for structure, it's mostly for cool factor, it actually weighs a little bit over the square arm but maybe that's because my Square arm has low fill percentage.
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bolt = 53 g aluminum tube and bearings 11g
Here's a picture of the printer in progress, you can see it needs quite a bit of support laying down in this configuration. [www.thingiverse.com]
@ A2
I initially tried 2 approaches, one with steps on the aluminum tube and one without. I think it's necessary to have the steps to eliminate any side play with this configuration.
You have a lot of good suggestions and I'm sure we can all refine this attachment. And yes I did drill out the aluminum slug today which resulted in substantial weight savings.
I tried to eliminate play by press fitting the aluminum tube in the shoulder and machining a land on the aluminum tube for the bearing inner race to rest against. The installation is simple, I slightly pried open the fork and pushed it over the aluminum tube until they snapped into place.
The design of the arm is not for structure, it's mostly for cool factor, it actually weighs a little bit over the square arm but maybe that's because my Square arm has low fill percentage.
Here's a picture of the printer in progress, you can see it needs quite a bit of support laying down in this configuration. [www.thingiverse.com]
@ A2
I initially tried 2 approaches, one with steps on the aluminum tube and one without. I think it's necessary to have the steps to eliminate any side play with this configuration.
You have a lot of good suggestions and I'm sure we can all refine this attachment. And yes I did drill out the aluminum slug today which resulted in substantial weight savings.