I have created a rectangular shape (8mm x 10mm x 2mm thick). The edges of this rectangular shape are at sharp 90degree angles. I am trying to round the corners and edges to make the shape look more "bubbly" as compared to razor sharp 90degree angles. An idea on how I can do this with Tinkercad?
5 comments

Guillermo Melantoni Hi Carl,
If you use Beta version of Tinkercad, the Box has an option for Radius, which will smooth all edges. The option Steps will define the resolution of that smoothness.

Formz Formz Hi, Guillermo! I tried your method, but by the time I get the edges rounded to the degree that I want, the rectangle turns into an oval. Is there a way to round over the edges and retain the rectangular shape? I am looking for something more like if you took a router, with a roundover bit, and rounded the hard edges of a board.

Christian You can keep the radius small, but have more steps:

Guillermo Melantoni The rounding is always defined by a radius. If the radius gets too big and close to half of the length of the prism's face, then it will look like an oval. Based on your explanation, I would still use a fillet. Do you have a picture to explain what you need?

Formz Formz Thanks Christian and Guillermo!
I found the SoftBox generator, with the wall set at 100 (although any wall width that is at least half of the longest dimension will work), and it gives me something very close to what I was looking for.
While this was close, it would be nice to be able to have the ends rounded over using the same radius. I used the double hole, or hole in a hole, technique and got even closer, but it left small miters at the corners, as seen in the image below.
The cube itself is perfect. The problem comes when you change the dimensions of the object. It would be great if you could use the rounded cube generator to place a cube on the work surface, set the radius, then lock the radius so you could grab the end handles and change the dimensions without altering the appearance of the roundover. Below is an object that I hastily built using multiple instances of the rounded cube, so please ignore the artifacts created when they were grouped. This is the exact shape I was looking for, but it took about 10 steps to get there. If you could lock the radius of the rounded cube such that you could scale it into a rectangular shape, this could be accomplished in a single step. Just a thought.
Thanks again!