The money bin is inspired bythe iconic design from Italian Disney artists like Giorgio Cavazzano and Silvia Ziche among others.
Customization using Fusion 360
Fusion 360 file is included for customizations.
In particular (see picture) you may want to change the scale factor: with a scale of 1, you're going to have a print that will barely fit on a standard Ender 3 buildplate, nice to see but a very huge one indeed.
Scale factor from 0.5 to 0.75 will give you more standard measures for being used by kids. It will still give you good details, saving a lof of filament and printing time. For your references, the STL files included here and the pictures were made with a scaling factor of 0.5.
You can also suppress the last extrude operation in the timeline to have a box/ornamental item instead of a piggybank.
If you don't tweak the parameters to very extreme values, functional measures will auto-adapt after the scaling factor is applied, so you don't (usually) have to worry too much about ending up a too narrow coin slot or not enough clearance for a typical FDM printer setup.
Depending on the size, pieces may or may not need supports. Thus, the followin is just a general guide which was tested with Scale=0.5.
- Box - No supports are needed (the roof and the dollar sign are supported by the geometry). Print with a layer height of 0.2 and enable coasting if your printer works well with that.
- Entrance - Generally no supports are needed, unless you're printing with Scale >= 0.75. Use a layer height of 0.12, so you won't loose tiny details.
- Face - Print three of them with 0.12 layer height. Supports are needed. Be careful when you remove supports, as those will easily break apart (see below for a easier alternative.
- Front Face - Same as above. Of course, you need just one.
- Planar Face - This alternative design for the yellow faces is easier to print and to assemble. Print in 0.2, without support, lying flat on the bed. If you use a Scale > 0.5, set the z height to 1.2/1.4 mm max. Again, print three of them and enable ironing if you want a smooth finish.
- Planar Front Face - obviously same as the aboves.
- Oval - No supports required. Print lying flat on the bed with 0.12 mm layer height.
- Dollar - No supports required. Print lying flat on the bed with 0.12 mm layer height.
- Dome - Print upside down, supports required. Set the hangout to >67° or even more if your printer allow it. This will ensure only very minimal support just around the uppermost part and for the coin slot. You may want to rise the printing temperature of about 5° here and use tree-shaped supports for better surface finish.
- Flagpole - Print as you see, supports required. Optimal layer height is 0.12/0.16 mm. The pole is obviosly very fragile, you may want to use a stronger material than PLA here. PETG should be ok.
Post-Printing
Planar vs standard faces
For the yellow coating faces you have two choices:
- You could print the original, curved, faces. They are not so easy to print, require support, longer print times and have a little sagged finish. If you print in ABS or stronger you should probably use these ones.
- You could print the planar surfaces instead. Put these flat on the bed and print without support, then snug them into the tiny slots on the box faces. If you print them with an height less or equal than 1.2mm, you will easily be able bend them in place. Choose these if you print in PLA or PETG.
As a referemce, the photos of my print here are from a model printed with the planar faces.
Final Assembly
If you choose to use the planar faces, the bin could be assembled without glue if you want, as fits are very snug to snap. But this may depend upon the scaling factor and the clearance. I decided to glue everything in place anyway, as this was intended to be a present for my 3 and 5 years old kids.
GabrioB
