From the Loftsmith Workshop

Cooler cup holder for tie-down slots, 53-95 mm drinks

Gives your drink a spot on the side of the cooler, so it stays off the sand and out of the grass. A hook slips into the tie-down slot and the bar sits under the lid, with a ribbed cup that holds the can. Change the drink size to fit your own bottle.

2 parts · 52 g · 111 × 74 × 80 mm

by Loftsmith Workshop

Orange ribbed cup attached by a dark hook to a grey block that clips into a slot
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No adjustable sizes

Ask for the sizes you want to tweak, e.g. “make the width adjustable”.

Change it in the Studio

Parts

  • hook · PETG · On its side, profile flat on the bed (the script's print rotation), so the layers run around the bend and along the leg

    About 14 g, 24 min at 2 walls/15%. Print it first: it doubles as the fit test for your slot.

  • cup · PETG · Upright, floor down; the peg pocket opens at the bed

    About 38 g, 58 min at 2 walls/15% for a 66 mm drink. Print another cup at a different Drink diameter to swap drinks on the same hook.

Print settings

Layer height
0.2 mm
Walls
2 (page default); 3 recommended for the hook
Infill
15%
Supports
None
Notes
Default build: about 54 g and 1 h 25 min for both parts at 2 walls/15%. At 3 walls/15% both parts take about 73 g and 1 h 55 min. PETG because a cooler in the sun gets hotter than PLA tolerates; ASA also works if you have an enclosure.

Assembly

  1. Measure the slot with calipers: its width along the cooler, its depth front to back, and the thickness of the rim wall between the slot and the outside. Set the three Cooler slot sliders.
  2. Print the hook first and drop it into the slot: the tongue goes down the slot and the leg hangs outside the rim wall. If it is tight or sloppy, change Hook clearance per side and reprint the hook.
  3. Close the lid with the hook fitted. If it touches, lower Top bar thickness (the strength check shows the new rating).
  4. Set Drink diameter for your can or tumbler, print the cup and lower it onto the peg at the bottom of the hook.
  5. To remove, lift the whole holder straight up out of the slot. The cup lifts off the peg for rinsing.

Good to know

  • The slot sizes are starting estimates, not measurements of any particular cooler; measure yours and print the hook alone as a fit test before the cup.
  • The top bar sits 4 to 7 mm above the slot top (6 mm by default). If your lid closes right over the slot, check it still seals with the hook fitted.
  • The strength rating is an engine estimate for PETG with a 2x allowance for setting a drink down hard; 2.19 kg at the defaults, about 1 kg at the thinnest top bar or narrowest slot. It assumes the rim under the slot is at least 8 mm tall. It has not been load tested.
  • If you combine the narrowest slot, the thinnest top bar and the 95 mm cup, the strength check fails and says so; thicken the top bar for big tumblers.
  • The cup is a straight 54 mm deep bore; strongly tapered tumblers sit by their base diameter, so set Drink diameter to the base.
I printed this Remix

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