Building a BTTF Mr. Fusion (scaled down to 75%).

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skahtul

Well-Known Member
RPF PREMIUM MEMBER
I have wanted something from Back to the Future for a while now to add to my collection and came across a model for a Mr. Fusion. Although the top coffee grinder portion does do come up on eBay from time to time, a full scale 1:1 would not fit in any of my display cases. So, I decided to scale it back to 75% and print it. Plus, even though it would be much more accurate I didn't want to pay $100 - $200 for a used coffee grinder. Sometimes I am into accuracy but for this, I am making it my own which will include opaque windows so that I can light it blue from the inside.

I will probably build some kind of base for it and create a tag with Mr. Fusion on it, but for now, here are the parts I have done so far. And yes, the colors are way off... I just started with some PLA that I had a lot of extra of, including this very bright yellow:

Base:

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Middle section and "coffee grinder"
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The top is pretty easy to smooth out, but I hate sanding so I will probably resin coat the bottom portions but I am not 100% sure on that yet. I may print some very scaled-down parts for testing.

I forgot to print some of the latches and buttons at 75% so here are some full-sized parts that need to be scaled down and re-printed:

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Here it is fully assembled for now. I am waiting for a textured PETG compatible bed to show up so that I can attempt the 'clear' parts next.

20200628_162324.jpg
 

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skahtul

Well-Known Member
RPF PREMIUM MEMBER
Upper and middle sections are primed and ready for paint.

Still not sure how I am going to handle the clear parts but I will figure out something.

The lower part that I coated in resin turned out amazing, so smooth!

20200705_140218.jpg
 

skahtul

Well-Known Member
RPF PREMIUM MEMBER
Really love the way enamels go down, super smooth and rock hard. I gave up on the clear parts, I will either fabricate something or have my friend see if it can be done with a resin printer.

20200706_224545.jpg


Painting the lower base black now and working on the hinges.
 

skahtul

Well-Known Member
RPF PREMIUM MEMBER
Just need to build the latch, get my clear parts, decals, and lighting. This is actually turning out to be a really fun build and turning out better than I right to :)

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skahtul

Well-Known Member
RPF PREMIUM MEMBER
Yes, it appears so. I downloaded it from Thingiverse but it has the same author as the one you 'mentioned' so I will assume so, even the description is the same.

I am still waiting on my clear parts... My friend with the resin printer has not been able to get them printed, they keep failing. I may figure something else out soon if he can't get them done.
 

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futaris

New Member
Printing out the clear parts is a pain. I printed the whole thing at about 10%, and used clear filament for the clear parts. The result is far from clear.

I should take a photo with a couple of Hot Wheels Deloreans and a Jada Nano Hollywood Rides for scale...
 

skahtul

Well-Known Member
RPF PREMIUM MEMBER
Printing out the clear parts is a pain. I printed the whole thing at about 10%, and used clear filament for the clear parts. The result is far from clear.

I should take a photo with a couple of Hot Wheels Deloreans and a Jada Nano Hollywood Rides for scale...

Nice, yeah, I have been unable to get that print working. I want to internally light the 'clear' part so I am not even worried about getting it that clear, just semi-transparent. The small shape of the sides and the hollow top is just not working. I have some quotes into a few places with resin printers so hopefully, I can get this finished up.

I have the latch assembly and other parts painted and ready... and I even have the lights ready to go.
 

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