This is a replacement circuit board housing for the decades old La Marzocco Espresso Machine at my friend's church. Apparently, attempting to acquire this housing new from the manufacturer is quite difficult. I've supplied the sliced files for multiple materials because I am using the free version of fusion 360 and could not provide the high resolution object file. Please, Please do not use the object file I've uploaded, it is only for your reference! Please use the sliced files I've uploaded because I am unable to provide the best quality object file. I used Matte Black Prusament PETG, but ideally would have used the new Prusament PETG_V0 filament. I created a sliced file with the programmed nozzle and bed temperatures for the PETG_V0 filament which you can see below. (The original part is made of a PC/ABS blend, but is clearly molded.) And from the photos you can see a picture of the original bottom of the housing for your own reference. Since I took the time to model it up, I made several tweaks to the design to improve it:
I added the best pattern to the bottom printing surface of both parts that I could as a beginner to fusion 360. The pattern's primary purpose is to prevent warping, which it did beautifully for both parts.
I've made the mounting posts slightly larger diameter so they fit the board holes better.
I've also given the base of the mounting pegs a taper for structural support.
I've increased the thickness of the walls for additional structural support and also added a tongue & groove joint around the whole box in attempts to create a more waterproof and snug fit. The mating tolerance of the joint is .00125"(inches), or .03175 mm. (It's tight and works beautifully).
I changed the taper on the countersinks of the outside holes to better help seat screws.
I added a larger bevel to the inside of the lid to the housing for structural support in printing. But it also greatly increases structural support of the whole housing and does not touch the top of the taller capacitors on the board while inside.
Screw holes for mounting the circuit board (if your version of the board has holes with screws) are slightly smaller diameter so the screws will have something to cut into.
I've also adjusted the size of the larger hole to fit the thick rubber washer. As you can see in the photo, the hole was just a touch too small, although it was exactly the same size as the hole on the original part. I think the wider walls caused part of the issue. Anyway, it should be fixed in the models I've uploaded.
And last but not least, I noticed that one of the holes in this board is not being used, so I've modeled a plug to put in it to seal it. You should be able to find the sliced files below.
In preparation for printing, I used 1200 grit sandpaper and lightly but thoroughly roughed up the appropriate surface area of my smooth PEI sheet. It print beautifully with just slight warping from the center up which was exactly what I was shooting for. The slight warping outward from the center trying to pull up caused the walls at the joints to fit even tighter.
In the end, I spent a little time deburring with a pocket knife and a toothbrush. I bet you will be pleased. Blessings, and hopefully this will help others and be less of a headache than trying to locate this part on the web in Italian!
The author marked this model as their own original creation.