Have been working these last few weeks on redesign’s for the lift setup and also on another project....
After a chat with a few builder friends about the aluminium wall thickness problem, Mark suggested trying carbon fibre rod as an alternative to the aluminium tube, for the lift/guide on the LFS unit. Ordered some 6mm O/D tube and it arrived from eBay within a few days. On receiving it I found it wasn’t as cylindrical as I was expecting, so I had to update the hole/guide sizes, not once but a few times. Printed off a few test pieces to check compatible sizes and then more test prints.
I had to go with a slightly larger bore on the guides rather than the original tighter fitting option, due to the carbon rods O/D.
Was still experiencing issues with the sliding. Possible alignment with the rod attaching to the lower servo bracket perhaps?? It was ok lifting, but got stiff near the top, which then prevents it from lowering under it's own weight....
This just wasn’t working...... So, I had to came up with a new design. This one now uses two sliding rods for the lower servo bracket to be guided on. I’ve also flipped this bracket over so that it’s guides support better on the rods from the underside. This all now works smoothly again lol.
With this new design, meant that the fixing bracket to the dome needed redesigning as well.
I also needed a new lower stop bracket, that linked the two tubes together but would be able to flex under the tubes being stretched if miss-alignment was an issue. I was really excited that it actually works.
Next up are a few more smaller changes and a new additional support for the main LFS tube.
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