M&j 35mm scanner build

Hi guys -looks like a cool forum and I like the idea of sharing ideas for building things -

We are building a transfer machine for 35mm and are working in functioning a prototype

This design is more like a projector and uses a Geneva gear -so far looks promising but will see - these parts are all cut on our 6040 router in aluminium so be interesting to see how it holds up -

using 12mm shafts for the Geneva drive and only had 1/2” bush to do a keyway so …image image image

Steel to

Here’s a first test video

Cutting the stainless drive teeth -ya have to go real slow with stainless-
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These are fantastic process shots. Thanks for sharing! That geneva gear is looking very good. Out of curisoity, what kind of mill are you using?

Hi Matthew - Great work on all your transfer info - it’s amazing to see all the work that is going into the kinograph project -

we using a 6040 Au $1200 Chinese cnc router from eBay - using fusion 360 to design and cam parts - it seems to work great with aluminium with single flute endmills - stainless is a bit tricky - you really need a slower spindal speed for it -but it works if you go really slow feed rate and use 4 flute endmills and plenty of coolant image here’s an aluminium version vs the stainless - aluminium is so much easier to cut and will probably my work just as well

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It seems to all fit

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That’s a great looking sprocket. Congrats!

Thanks- be interesting when we test it to see if it grinds the film to dust


Got it pulling film through - next need to get some gate bars happening and then some play and take up film spools https://youtu.be/28tPoXrZGng

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Gotta customise ya spools

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That looks great! @milesjules, assuming you have a lathe that could handle delrin or similar, would you be willing to make a few parts if I supplied the materials? I’ve been trying out 3D printing the rollers here at home and while they do work, I’d love to get some delrin ones too to try out.

Yeah sure - we only have a manual lathe - so as long as it’s not insane tolerances you need- also we are in Australia so sending stuff can be slow from USA- otherwise I can source it locally and send

Ah, okay I guess that doesn’t make a lot of sense with the distance. But thanks for offering!

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Got the rewind Scooter motor mounted and gonna see if this pulley size is geared enough to rewind without snapping film