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Print-in-place: three-stage telescoping tube with stops (Ø40)

Name: Print-in-place: three-stage telescoping tube with stops (Ø40) dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How do you 3D print a telescoping tube in one piece? · Hardware · basis: Xem Studio design: revolved profiles; 45° flanges and lips; one designed running gap of 0.40 mm

Also called: print in place telescoping tube, telescoping tube stl, 3d printed collapsible tube, print in place telescope

Exact dimensions. True size, with no printing tolerance added.

length: 40.0 mm
width: 40.0 mm
height: 68.0 mm

Notes

3D print in place — prints already assembled, moving, in one job. Drawn at true size with no printer tolerance added; the 0.40 mm running gaps are part of the design.
Running gap 0.40 mm per side, 0.80 mm on diameter — part of the design, drawn as is. On the 45° faces the same 0.40 mm is measured square to the face (0.57 mm along the axis).
Bed: the three tubes stand nested, coaxial, all on their bottom ends.
Support while printing: every lip and flange is a 45° diamond or wedge: the inward lips of tubes 1 and 2 have 45° undersides, the outward flanges of tubes 2 and 3 have 45° undersides and tops. Tubes are open both ends; nothing overhangs more than 45°.
Captured both ways: each inner tube's flange (reach 1.6 mm) sits between the outer tube's bottom lip and top lip, so it can neither drop out of the bottom nor pull out of the top.
Freeing it: hold the outer tube, pull the inner tube up a few millimetres and push it back; then the middle one; turn each a little.
Motion: stage 1 slides 50.8 mm, stage 2 54.8 mm (computed to the flange-on-lip stop): 68 mm collapsed, 173.6 mm extended. Each tube also turns freely in the next.

Print-in-place: three-stage telescoping tube with stops size chart

key	value	what
gap_mm	0.4	running gap per side on every moving interface (radial, axial, under captured parts) — part of the design, not a tolerance
tube_1_od_mm	40.0	outer tube
tube_2_od_mm	32.0	middle tube
tube_3_od_mm	24.0	inner tube
wall_mm	2.0	every tube
tube_1_h_mm	60.0
tube_2_h_mm	64.0
tube_3_h_mm	68.0
lip_reach_mm	1.6	radial overlap of each flange behind its lip
travel_1_mm	50.8	tube 2 out of tube 1, drawn (collapsed) to flange-on-lip stop
travel_2_mm	54.79	tube 3 out of tube 2
length_collapsed_mm	68.0	as printed
length_extended_mm	173.59	all stages out to their stops
bottom_play_mm	1.98	each tube can drop this far below the drawn position before its flange sits on the lower lip

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Xem Studio

Print-in-place mechanism design (geometry computed in the generator)

web

Xem Studio design

Free files

★ Free files 4 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

print-in-place-telescoping-tube-assembly	The whole print as laid on the bed (3 bodies, already assembled); STEP keeps each moving body a separate solid	STEP · STL
print-in-place-telescoping-tube-tube-1-outer	Outer tube Ø40 × 60, wall 2, 45° lips top and bottom	STEP · STL
print-in-place-telescoping-tube-tube-2-middle	Middle tube Ø32 × 64, wall 2, 45° flange outside, 45° lips inside top and bottom	STEP · STL
print-in-place-telescoping-tube-tube-3-inner	Inner tube Ø24 × 68, wall 2, 45° flange outside	STEP · STL

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Plain text: sheet.txt · JSON: /api/geometry?object=print-in-place-telescoping-tube