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Adapters & couplers
SP Connect SPC+ to Quad Lock mount adapter
An adapter disc that lets a phone in an SP Connect SPC+ case ride on Quad Lock bike, motorbike and car mounts, or the other way round if you flip the description. One face carries the four-lug Quad Lock style boss, about 37 mm across and 4 mm tall, and the other reproduces the SPC+ twist interface with its shallow bayonet ring and detent recesses. The 6 mm thick disc prints flat with 0.2 mm clearance on both patterns and a 1 mm chamfer so the lugs start easily. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| adapter disc diameter | 45 mm |
| adapter disc thickness | 6 mm |
| chamfer on disc edge | 1 mm |
| diameter across lug tips | 37 mm |
| radial length of hook lip (bottom, bed contact) | 10 mm |
| tangential width of lip | 8 mm |
| lip height | 1.5 mm |
| radial length of post above lip | 8 mm |
| tangential width of post | 6 mm |
| post height | 2.5 mm |
| nominal clearance folded into lug width | 0.2 mm |
| ring outer diameter | 40 mm |
| ring wall thickness | 2 mm |
| ring wall height | 3 mm |
Example prompt
Create a 45 mm diameter, 6 mm thick adapter disc with a Quad Lock style four-lug boss 37 mm across and 4 mm tall on one face and an SP Connect SPC+ style bayonet ring 40 mm across with two 6 mm detent recesses on the other, 0.2 mm clearance and 1 mm chamfers.
Fit notes
Both brands revise their interfaces and neither publishes drawings, so a downloaded adapter is a gamble. In SpeakCAD you measure your own case and mount, describe both patterns, preview the adapter in the browser, refine the twist tension in the chat, then download the STL and print it in PETG or nylon.
Questions people ask about an SP Connect SPC+ to Quad Lock mount adapter
An adapter disc that lets a phone in an SP Connect SPC+ case ride on Quad Lock bike, motorbike and car mounts, or the other way round if you flip the description. One face carries the four-lug Quad Lock style boss, about 37 mm across and 4 mm tall, and the other reproduces the SPC+ twist interface with its shallow bayonet ring and detent recesses. The 6 mm thick disc prints flat with 0.2 mm clearance on both patterns and a 1 mm chamfer so the lugs start easily.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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