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3d printed keycap getting stuck (for lofree touch mouse)

Posted: 27 Feb 2025, 09:47
by djeyewater
Not really sure where to post this, but I'm trying to 3D print a button for the lofree touch mouse. This mouse uses keycaps for buttons, though they are specific to this mouse, not standard keycaps. The left mouse button has two 'switches' (actually a single switch with 2 mounting posts) that the keycap mounts to. The problem is that my 3d printed keycap seems to keep the rear 'switch' pushed down.

I've tried several iterations, but all have the same problem. I think my button is pretty close to the original, though it is difficult to measure angles, lengths etc of the parts making up the underside of the original button. Can anyone suggest what the problem might be / what I might need to change to prevent the button sticking?
3D printed keycap left, original right. Bottom of button in this image goes towards top of mouse when fitted.
3D printed keycap left, original right. Bottom of button in this image goes towards top of mouse when fitted.
IMG_2083.jpg (65.56 KiB) Viewed 9183 times
Mouse with the 'switches' the button attaches to
Mouse with the 'switches' the button attaches to
IMG_2084.jpg (82.77 KiB) Viewed 9183 times
Original button fitted (works fine)
Original button fitted (works fine)
IMG_2085.jpg (51.39 KiB) Viewed 9183 times
3D printed button fitted and causing rear 'switch' to stay stuck down
3D printed button fitted and causing rear 'switch' to stay stuck down
IMG_2086.jpg (62.71 KiB) Viewed 9183 times

Re: 3d printed keycap getting stuck (for lofree touch mouse)

Posted: 03 Mar 2025, 13:51
by idollar
Hello,

I would print the keycap splitted in the middle (with a gap). Install the two parts and check for the (potential) angle between the two top parts. This will indicate if there are adjustments to be made in your design.

Cheers

Re: 3d printed keycap getting stuck (for lofree touch mouse)

Posted: 05 Mar 2025, 11:19
by djeyewater
idollar wrote: 03 Mar 2025, 13:51 Hello,

I would print the keycap splitted in the middle (with a gap). Install the two parts and check for the (potential) angle between the two top parts. This will indicate if there are adjustments to be made in your design.

Cheers
Thanks very much, thats a good suggestion! I tried it, and both halves then clicked fine, but the tops of the two halves didn't line up. So hopefully I can make some adjustments and get a working button.