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Drag Chain specified in 3.0.5 BOM has wrong mounting foot print #686

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rmhorwitz opened this issue Oct 2, 2023 · 2 comments
Closed

Drag Chain specified in 3.0.5 BOM has wrong mounting foot print #686

rmhorwitz opened this issue Oct 2, 2023 · 2 comments
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@lucian151
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area: cad requires an update to a mechanical design help wanted Extra attention is needed project: lumen has to do with the lumen pnp base machine type: bug Something isn't working

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@rmhorwitz
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Version Number

3.0.5

Bugfix or Enhancement

This is a BOM related issue. Component in BOM 3.0.5 is not compatible with the specified design.

Description

The Drag Chain specified in BOM 3.0.5 vendor's list does not fit either X-Gantry Back or Front-Drag-Chain-Mount.

Suggested Solution

  1. create a mounting adapter plate for the drag chain
  2. modify drag chain to fit into existing mounting holes
  3. Find correct drag chain with the same hole pattern as the printed parts.
  4. Redesign X-Gantry Back and front-drag-chain-mount to use a generic mounting
@lucian151 lucian151 assigned lucian151 and unassigned sphawes Oct 2, 2023
@lucian151 lucian151 added type: bug Something isn't working help wanted Extra attention is needed area: cad requires an update to a mechanical design project: lumen has to do with the lumen pnp base machine labels Oct 2, 2023
@lucian151
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I've added a note to the BOM in commit b62a0df to alert builders to this issue. This will be ultimately solved by replacing the Amazon source with something else like what LDO is able to supply Opulo.

@lucian151
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If anyone is still affected by this issue you can make a drill jig for reworking a drag chain's hole pattern. They look like this:
Screenshot 2024-05-22 at 6 32 26 PM
Screenshot 2024-05-22 at 6 32 46 PM

You can download the FreeCAD model of these jigs here.

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area: cad requires an update to a mechanical design help wanted Extra attention is needed project: lumen has to do with the lumen pnp base machine type: bug Something isn't working
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@sphawes @lucian151 @rmhorwitz