Parametric Plastic Welder Holster - Multiboard Fix Point
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Store a plastic welder in a custom-fit tapered holster with locking Fix Point locators.
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Store your plastic welder on Multiboard in a tapered, square-opening holster sized to its body. The collar supports the tool while the setback leaves clearance from the mounting face. This is a storage holder: let the welder and its tips cool completely before putting it away.
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.
This holster always uses two Fix Points on 25 mm centers; its mounting count does not grow with the opening size.
Fix Point connectors are separate parts and are not included in these downloads. Follow MultiBuild's instructions for the connectors.
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.
For mine, printing on a Bambulabs P1S, Original worked out fine.
Preset | Top / bottom square opening (mm) | Collar depth (mm) | Setback (mm) | Wall (mm) | Fix Points |
|---|---|---|---|---|---|
Compact | 32 / 29 | 12 | 25 | 5 | 2 at 25 mm |
Original | 38.5 / 35.5 | 12 | 25 | 5 | 2 at 25 mm |
Large | 45 / 42 | 12 | 25 | 5 | 2 at 25 mm |
Customize it for your own tool
I imagine these tools are all identical and come from the same factory somewhere, but you never know. In case you have a similar tool but with a different-sized snout, you can change the opening size to suit your gadget.
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 Plastic Welder Holster Part Studio tab, then double-click Tapered Holster - edit dimensions 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
Top opening (square): Side length of the square opening at the top of the collar.
Bottom opening (square): Side length at the bottom; together with the top opening and depth, sets the taper. Keep this no larger than the top opening.
Collar depth: Height of the tapered collar along the tool-insertion direction.
Opening setback from mounting face: Distance from the mounting datum to the rear edge of the top opening; increases tool-to-wall clearance.
Collar wall thickness: Material thickness around the square collar.
Fix Point channel lock: Enables the rounded locator ridge in each mounting slot. Keep enabled for a grooved Fix Point.
Printing and fit
PETG is a suggested starting material for the rigid holster. Check the slicer preview and tool fit before loading it. No heat resistance or load rating is claimed.
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.