Parametric File Rail - Custom File Set - Multiboard Fix Point
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Organize handled files in individual slots with custom handle spacing. Flexible file count via a fully parametric model.
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Updated at source:
Model information
- Source
- Printables
- Category
- Organizers
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Organize a set of handled workshop files on one rail, with a separate blade slot and handle cradle for each file. Enter each handle diameter and blade gap so differently sized files can sit together with usable finger clearance.
Fix Point mounting with a locator
Use a Fix Point with a horizontal groove in its head, such as the MultiBuild Small Thread - Fix Point (Folded). Orient that groove horizontally. The rounded locator ridge inside this holder's mounting slot engages the groove as the holder seats, locking the holder and its tool position into place. Keep the channel-lock option enabled for this feature. Check full engagement and fit on your print; the locator is not a rated safety latch.
The rail length and Fix Point count expand automatically as you add files or enlarge the spacing. Fix Points are centered along the backplate on 50 mm centers. The count is max(1, floor((rail width - 20 mm) / 50 mm) + 1). The supplied 3-, 4- and 5-file rails therefore use 2, 3 and 4 Fix Points respectively.
Fix Point connectors are separate parts and are not included in these downloads. Follow MultiBuild's instructions for the connectors.
Convenience STL sizes
All linear dimensions are millimeters. Each filename records its main dimensions; "p" means a decimal point (for example, 24p2 = 24.2 mm). All supplied variants have the channel lock enabled.
Preset | Handle diameters in order (mm) | Blade gaps in order (mm) | Rail width (mm) | Fix Points |
|---|---|---|---|---|
3 files (original) | 39 / 27 / 15.5 | 6.2 / 5 / 5 | 111.85 | 2 |
4 files | 39 / 27 / 15.5 / 25 | 6.2 / 5 / 5 / 5 | 144.10 | 3 |
5 files | 39 / 27 / 15.5 / 25 / 35 | 6.2 / 5 / 5 / 5 / 6 | 186.60 | 4 |
Customize it for your own tool - the best way to use this model
These STL exports are just for convenience. The best way to use this model is to make a parametric version tailored to your specific file sizes
Open my editable Onshape model and sign in to your Onshape account.
Open the document menu beside the Onshape logo and choose Copy workspace... to create your own editable document. Work in your copy, not the original.
Choose the File Rail Part Studio tab, then double-click File Rail in the left-hand feature list. The parameter screenshot in this listing shows the settings dialog.
Measure your tool, edit the values below, and confirm with the green check. Let the complete feature tree regenerate and check for errors or unintended geometry.
Right-click the finished part in the Parts list and choose Export.... Choose STL, Binary, Millimeter, Fine and download.
Slice at 100% scale, check the orientation and preview, and print a fit test before relying on the holder.
Parameters
Files / Add File: Add an entry for every file; the list order determines the slot order. Expand an entry to edit its two measurements.
Handle diameter (per file): Handle size used to calculate spacing to neighboring files.
Blade gap (per file): Clear slot width for the blade. Include the clearance your print and tool need.
Clear gap between handles: Extra edge-to-edge space between adjacent handles, beyond their radii.
End arm width: Material width outside the first and last blade slots.
Arm length: Projection of the supporting shelf/arms from the backplate.
Handle cradle radius: Radius of the curved handle seating surface.
Handle cradle depth: Depth of the curved recess in the supporting shelf.
Arm thickness: Thickness of the shelf/arms beneath the files.
Backplate height: Vertical size of the rear mounting strip.
Backplate thickness: Thickness of that rear mounting strip.
Fix Point channel lock bump: Enables the rounded locator at each mounting slot.
Printing and fit
All presets use 12 mm clear handle spacing, 14 mm end arms, 35 mm arm length, 38.125 mm cradle radius, 2.5 mm cradle depth, 8 mm arm thickness, an 18 mm-high by 5 mm-thick backplate and the channel lock enabled. Overall projection is 40 mm. PETG is a suggested starting material. Verify each blade slot and handle seat before loading the complete set.
The exported meshes have been checked digitally for closed edges and expected dimensions. The size variants have not all been physically test-printed. Fit, retention and strength depend on your tool, material and printer. Build photos will be added separately.
Credits
Parametric holder design and custom horizontal locator ridge by Colin MacLeod. The mounting slots use the official Multiboard Fix Point negative/cutout geometry from MultiBuild / MultiBoard LTD (formerly Keep Making). Credit to MultiBuild for the underlying mounting interface; see the official Fix Point Slots STEP remixing files.
I am sharing this design for free as a hobby project. I am not selling it or profiting from it.
The reused MultiBuild geometry remains subject to the MultiBuild license, including its terms for commercial use. This is a community-made holder, not an official MultiBuild product, and no endorsement is implied.