The floor clearance of IKEA Tidafors couches: 8cm. The height of a regular robot vacuum incl. wheels: just under 11cm. Let's raise the couch by 3cm.
First idea: put 3cm thick blocks underneath the four couch feet, like coasters for drinks.
I designed it, but didn't print it because:
- Coasters probably fall off when moving the couch, since they're not affixed to the feet.
- Material efficiency could be better: printing with 0.25mm layers and 10% infill would require 100g PETG per foot.
I repurposed this design to raise other furniture with square feet, such as an IKEA Lack table and a plant shelf, so it wasn't a wasted effort.
Second idea: add an extension between the couch and the couch feet.
- Should be more robust than the coaster since it's affixed with screws.
- Shearing forces should be smaller, so we can get away with less material (around 80g).
- Downside: need to buy longer M8 screws, and extensions for the wood plugs on the Tidafors feet.
For better printability, the wood plug extension is a separate printed part (sandwich_wood_plug_extension.scad) that screws into the main part.
- printer: Prusa Mini+
- filament: transparent Prusament PETG
- print settings: default 0.25mm settings with modifications
- infill: gyroid 15% (less material than grid, and it should stabilize our thin walls better)
- avoid crossing perimeters (to minimize stringing/blobs)
Make sure to print all threaded parts with the same layer height. Parts will not fit when mixing 0.2mm and 0.25mm.
- The stock M8 screws are 60mm, so raising by 3cm requires four 90mm M8 screws.
- Don't be an idiot like me and buy screws longer than 90mm. I bought 110mm, and screwing those all the way in still leaves a 2cm gap between screw head and foot because there is not enough thread on the screw to screw it in further.
- I solved this by printing a 2cm tall hollow cylinder per foot to bridge that gap, see
sandwich_screw_sheath.scad.
- I solved this by printing a 2cm tall hollow cylinder per foot to bridge that gap, see
