Super easy printing!

The hand is placed on the tapered pin of the tray. You can glue them* if you prefer, but this is not necessary.

The bowl is placed on the recess in the hand. Also with this one: If you prefer, you can glue them, but this is not necessary. (Although I recommend a bit of double sided tape or gluing* for a solid placement.)

Print all parts as positioned in the STL files. Use your own favorite settings for a sleek looking result. With my print I used a 0.4 nozzle, layer height 0.2 and infill 15%. None of the parts require a support. For the bowl you can use a small brim (I used none).

The different parts can easily be printed in a different colour.

 *  The hand can also be rotated 180° for a different orientation. However, then the Bowl cannot be used. (see foto) If you want to be able to change later, don't glue!

tip: For a personal touch paint the nails!

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The hand is a variation on a model I used before for my design "Your Unfolding Heart". It is a model made by Sebastien L. The original is at GrabCad (used with permission)