Case for the Megacart

Discuss the CreatiVision hardware: models, revisions, fixing, hacking and modding.
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cheshirenoir
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Case for the Megacart

Post by cheshirenoir » Mon Oct 18, 2021 6:34 am

Hey all,
There's been some demand for a case for the MegaCart, so I fired up OpenSCAD and gave it a go.
This case is, as yet, untested. I do have a 3D Printer now, but it's going to take 2 DAYS to print these and I figured some of you might want to start playing around with it now. Y'know. Kick the tyres. That kind of thing.

https://github.com/cheshirenoir/CreatiV ... gaCartCase

Is it perfect? No! Will it even work? Who knows? I won't get a chance to print it until Thursday I suspect. I'd suggest hanging off until then as there's likely to be a 1.1 shortly after I finish with some tweaks :-D

Chesh
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Scouter3d
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Re: Case for the Megacart

Post by Scouter3d » Mon Oct 18, 2021 1:37 pm

Hi,

wow! looks good!

i did a quick and rough 3d Print...

i found two little bugs ;0)

first i had to remove some excess material in the marked areas from the bottom part (see pic) and i found the case is wider than a normal cartridge and does barely (or not at all, depending on the force i used :0)) fit into the cart-slot...

sadly my Mega-cart PCBs are still traveling the globe... so i can not confirm if they fit...

Cheers, TOM:0)
cart_too_wide.jpg
cart_excess_material.jpg
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cheshirenoir
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Re: Case for the Megacart

Post by cheshirenoir » Tue Oct 19, 2021 1:31 am

Thanks for that!
I'll load up the design and have another look shortly.
I know exactly what I did wrong in the lower bit there now you pointed it out :-D
As for the scaling, I'll have another look. No idea what went wrong there :-D

Chesh
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MADrigal
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Re: Case for the Megacart

Post by MADrigal » Tue Oct 19, 2021 8:09 am

It looks good! Just a little adjustment to the width and should go great :)
How about the height?
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Scouter3d
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Re: Case for the Megacart

Post by Scouter3d » Tue Oct 19, 2021 11:16 am

The height is perfect! :0)
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cheshirenoir
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Re: Case for the Megacart

Post by cheshirenoir » Wed Oct 20, 2021 3:54 am

What's really odd is I just doublechecked my measurements against a Crazy Chicky cartridge and they're exactly right!. I wonder if it's an artifact of your printer? I've optimised for a Resin printer, so no "shrinkage".
I'll parameterise width so that way you'll be able to adjust the width with a single parameter :-D

Give me a day or two. It's pretty badly "hand coded" currently :-D
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Scouter3d
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Re: Case for the Megacart

Post by Scouter3d » Wed Oct 20, 2021 5:46 am

Hi,

maybe my printer is badly off calibration... i will check the axis...

I think there is no need for you to add the adjustable parameter if it is my printer :0)

Cheers, TOM:0)
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cheshirenoir
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Re: Case for the Megacart

Post by cheshirenoir » Wed Oct 20, 2021 6:32 am

I've uploaded a version with the base part corrected for the overlap.
@Scouter3D, if you can measure how wide your cartridge came out, I can work out the scaling factor.

Chesh
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Scouter3d
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Re: Case for the Megacart

Post by Scouter3d » Wed Oct 20, 2021 10:37 am

Hi,

i just found the bug ;0)

the sides of the case need to be tapered to fit the Creativision slot...
cart_tapered.jpg

cheers, TOM:0)
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cheshirenoir
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Re: Case for the Megacart

Post by cheshirenoir » Wed Oct 20, 2021 12:12 pm

Well caught and you are quite correct!

OK I'll drop them overall to 63. Won't be as realistic, but I am sure we'll all live :-D
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