Skirted Knob (large, 6mm D-shaft)
A 30mm skirted control knob with a knurled 18mm grip, 20mm tall, for the standard 6mm D-shaft — the hi-fi and vintage-radio pattern where the skirt sweeps close to the panel and covers the mounting nut. The bore is 6mm with the standard 4.5mm across-flat D (per the Bourns pot drawing), printed 0.2mm over so it pushes on and the flat drives it without a grub screw. Bore depth 17.0mm, blind under a solid cap. The knurl is at 1.6mm pitch — the coarse end of ISO 13444's series, because finer teeth than that vanish under a 0.4mm nozzle. Prints skirt-down, no support. Said plainly for restorers: the shape can match, the material cannot — printed PETG is not Bakelite and will not pretend to be under close light.
from £2.44example, in PLA
Example pricing
A guide only — not a fixed quote. Final price depends on material, quantity, print orientation and printability.
| Material | 1 unit | 5 units | 10 units | 25 units |
|---|---|---|---|---|
| PLA | £2.44 | £10.24£2.05/unit | £18.53£1.85/unit | £41.44£1.66/unit |
| PETG | £2.57 | £10.81£2.16/unit | £19.56£1.96/unit | £43.75£1.75/unit |
| ABS / ASA | £2.88 | £12.09£2.42/unit | £21.87£2.19/unit | £48.92£1.96/unit |
Per-unit prices fall with quantity. Larger batches are cheaper still — ask for a bulk quote.