Chamberstick Design Chat

I found that Fusion 360 is open with your Fusion360MCP add-in listening, so I can build the models directly in Fusion and test them as I go. Next I'm reading how the add-in takes commands.

Script is written. Now I'm running it live in Fusion, one design at a time, to catch API errors.

Design A built cleanly on the first try. Rendering it to check the look.

Design A looks right: urn socket, sunburst saucer, scroll handle. Next is B.

B works, but the strap's end pokes out under the rim (right side of the front view). Pulling it inward, then building C.

C matches the blue enamel photo: ring handle, rolled rim, knurled knob. Now building the combined final design.

The build finished; the null was only the add-in's 30-second reply timeout. Checking the new render:

The crook reads as a proper chamberstick thumb piece now. Next I'm checking the internal features (bore, nut slot, screw hole, spike pocket) by testing which points fall inside the solid.

The standalone run built all four designs in 17 seconds with no errors. Rendering the line-up and checking the layout:

All four built and laid out side by side. Next: close my scratch "DEV" document (never saved), export STL/STEP/F3D files, and take individual renders.

Exports are done. Checking the STL frame and size, then taking the final renders, including a cutaway through the screw.

STLs sit flat on z=0. The final holder is 166 × 132 × 54.5 mm, which fits a 180 mm bed. Now the renders:

The Component object has no section-analysis API, so those two "section" images are just plain renders. Checking whether the Design object exposes one instead:

The Design object does have sectionAnalyses. Making a temporary cutaway through the screw axis:

Last step: a short README covering hardware, print and assembly notes, and the design comparison.

I designed three movie-style chamberstick concepts, then a final version that combines the best parts of each. All four are built in Fusion 360 now. Each socket fits candles up to 1.5 in, and an M5 screw clamps the candle from the side.

They're in a new document called Chamberstick Candle Holders, laid out side by side. It isn't saved yet, so use File → Save to keep it. I built them through your Fusion360MCP add-in. Your "motor mount" document wasn't touched.

The three concepts: - A "Scrooge" (based on your brass photos): fluted brass saucer, vase-shaped socket with a flared drip collar, curled scroll handle. The candle is pushed onto an M5 bolt pointing up through the base. Weak spots: the handle hangs off one point, has very little room for a finger, and needs print supports. - B "Wee Willie Winkie" (based on the pottery photos): deep plain dish, straight socket, strap handle. The M5 nut drops into a slot from the top. Weak spots: plain look, the open slot catches dripping wax, and the strap needs supports. - C "Marley" (based on the blue enamel photo): rolled rim, finger-ring handle with a thumb pad, and a printed thumb knob. The nut slides in from the side. Weak spots: the thumb pad needs supports, and the socket looks less like the movie ones.

The final version takes: - From A: the vase-shaped socket, the fluted saucer, and an optional bolt spike. The scroll became a small hook on top of the ring, angled steeply enough to print without supports. - From B: the deeper dish for catching wax, and a handle that joins the rim at two points. - From C: the rolled rim, a finger ring with a 24 mm hole, the side-loaded nut and the thumb knob. A side-loaded nut is the only kind that works under the flared top of A's socket.

The final version is 166 × 132 × 54.5 mm, prints flat with no supports, and comes out as one piece.

Checks: - The script ran from start to finish in a fresh document with no errors. - Each holder came out as one solid piece. - Point checks confirmed the bore, nut slot, screw hole, spike pocket and finger hole are all open where they should be. - The cutaway image shows the nut, bolt and knob lined up and the screw tip touching a 1.5 in candle.

Hardware: - 1 M5 hex nut. - 1 M5×30 hex-head bolt for 1–1.5 in candles, or M5×35 if you also want 7/8 in tapers. - Optional spike: 1 M5×16 bolt plus a second nut.

Things to know: - "Secured with an M5 screw" could mean a side clamp or a spike underneath. I made the side clamp the main method because it works across candle sizes, and left the spike as an option. - The side screw pushes smaller candles against the far wall, so a 7/8 in taper sits about 8 mm off-centre. - Print in PETG or ASA, not PLA, since PLA softens around 55–60 °C. Don't let the candle burn down into the socket.

I also copied the script into Fusion's Scripts folder. Press Shift+S and run ChamberstickCandleHolders to rebuild everything. All the dimensions are listed at the top of the script, so you can change them and re-run.

Files are in a folder the app made for this session: - README.md – hardware, assembly and print notes - ChamberstickCandleHolders.py – the Fusion script - FINAL_Chamberstick_holder.stl and FINAL_Chamberstick_knob.stl – ready to print - exports – STL files for every design, plus STEP and .f3d files - renders – images of each design and the cutaway

If you want to keep this work, I can move this session to a folder you choose.