Plate holder for walker for elderly

My grandma now needs her walker to move around at home, so I designed this to help her a little.

You will need 4x M3 screws with hex heads, length depending on your walker, for me it was 120mm, and 4x m3 nuts.

You will need to measure your walker top platform width, and diameter of the ridge on the bottom of the plate(s) you will use so it fits nicely to the cutout.

Top part needs supports touching buildplate, rest can be printed supportless. I did 3 cutouts on the side for eventual accessory (silverware holder, glass/mug holder), I will see what will be needed.

Some walkers have the platform flat, some have pipe runnig underneath - you just need to flip the bottom part around, should fit both cases.

Original Fusion 360 file included, tried my best to have it parametric but your mileage may vary. 

Hope it will help someone.