I see it is claimed, but has anyone had experience trying to actually get around outside? I thought as per the specs it was an indoor only specific device? I know my house has 3/4” transitions between a few floors and these were an issue. Also the push handle, if someone tried to use it as a lever to get over an obstacle I’m pretty sure it would not end well.
I think you are spot on about the handle– I think it is the weakest point of the TMT, judging by all the reassuring creaks it emits anytime you touch it.
Interesting to hear these stories. This design uses 2 perimeters and and 15% infill for most of the parts, which is relatively low for functional parts. Sufficient for indoor use, for sure. But certainly not heavy duty.
It’s all a game of compromise though. If you doubled the perimeters and infill, the device would be stronger, but it would use 2x as much filament, take likely 2x as long to print, and weigh double what it does.
Curious if a double filament “heavy duty” TMT would fare any better outdoors.
That wouldn’t even work - it wouldn’t tilt unless the rear caster were removed.
I could see a kid using it outside if they had a smooth level driveway or sidewalk, but they would have to be supervised and just go back and forth in front of the house, not down to the store.
My daughter uses it at the accessible park, and in our driveway- I wouldn’t recommend long distances or tilting the handle I tried slightly and it felt like it would snap easily if I went farther! Definitely can be used outside I just wouldn’t take it long distances or over tough grounds!
Thank you so very much for sharing your experience.
It kind of does… When I printed the first one, my daughter who is eight was my test subject. I really wanted to see how the TMT functioned. I quickly realized if it was to be used in my home I’d have to do something with the transitions between rooms. To get over them with my daughter in the TMT I’d gently step on one of the back corners, while GENTLY pulling back on the handle. It would lift the opposite front wheel enough to get over the transition. I also hypothesized that this would not last long in daily use. I wasn’t about to put it to the test.
I have been printing everything with the following settings:
99% of PETG parts–0.6mm nozzle, 5 walls / 20% infill
Headrest and bolt–0.4mm nozzle, 3 walls / 15% infill
Buckles–0.4mm nozzle, 4 walls / 20% infill
Tires–0.8mm Nozzle, 5 walls / 20% infill
TPU Parts:
Harness— 0.6mm nozzle, 3 walls / 20% infill
Lap and luggage straps–0.6mm nozzle, 2 walls / 20% infill
Small straps–0.4mm nozzle, 2 walls / 20% infill
I think you end up using 1-2kg more of filament, but the advantages are less likelihood that something will crack and knowledge that something is built with higher specs than stock.
