Dragchain for Upright Highres OFM with V7-Parts

Contributions
1

As already shown in my build-report ( https://openflexure.discourse.group/t/build-report-of-second-build-high-resolution-upright-microscope-v7-hardware-v3-server/ ), I will share the files to print a dragchain for the Upright Highres-version.

The Files: unfortunately discourse does not allow much filetypes beside images, so you can download the files from this gitlab repo i just created. this is not something I am currently actively working on, this is just a place to drop the files. the .tar.gz in that repo contains all the rest of it.

Dragchain in action:

final_back
final_back1920Ă—2681 227 KB

final_front
final_front1920Ă—2512 215 KB

final_birdseye
final_birdseye1920Ă—2056 168 KB

Details:

top-view:

drag_chain_complete_2
drag_chain_complete_21536Ă—978 42.2 KB

bottom view:

drag_chain_complete_1
drag_chain_complete_11536Ă—978 28.4 KB

the bottom part needed to be split and we got rid of the sidewalls of the inserting piece so that the picam-cable does not kink (it is basically as wide as the slot in the OFM). the center-pieces exist in 2 variants, one has a larger cavity to easier insert the z-motor-cable halfway in the chain.

drag_chain_element1
drag_chain_element11536Ă—978 44.7 KB

drag_chain_element2
drag_chain_element21536Ă—978 15.9 KB

Please feel free to use it however you like, we of course would love to see it incorporated into the official builds, i deliberately have choosen the same opensource-license.

However, in it’s current state, all the pieces have to be printed with tree supports and the printer must be able to print quite steep overhangs. We printed the parts on a Prusa CoreOne on PLA. This version is basically “for the looks”, but I am sure, the printability can be improved quite substantially.

64
641920Ă—1446 101 KB

Have fun.

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Build Report of second build - High resolution upright microscope - V7 Hardware, V3 Server
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i just noticed, that while inspecting the regular upright low-res microscope, that the drag-chain most likely would work on that one, too. maybe minor modifications are necessary, but the camera-cover is fully open on both sides, so I think it “should” also work on the low res version. the drag chain cannot stretch to a fully horizontal arrangement because of the “scale-tip”, but in the other direction it can easily bend to 90°, so a tighter radius itself should not be a dealbreaker.

1 Like
3

This must be a typo. This obviously is a dragon chain.

2 Likes
4

did not thought about that. awesome :rofl: .

1 Like
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Some updates:

We have now uploaded the drag-chain with some more generic end-pieces for general use to printables: Dragon Scale Drag Chain by pixel | Download free STL model | Printables.com . As you can see, it also looks very cool in a black and copper theme.

beside that, we also uploaded the drag-chain-version displayed here for the upright OFM (and others) to printables as well: Drag chain for a OpenFlexure upright microscope by pixel | Download free STL model | Printables.com

…happy printing.

2 Likes