3D printable coil housings

[blobber]

[BKY1337]

Nice coil. Looks good,
i think you can remove the spider arms to reduce the weight, or just two of them.

My problem now is that my housing depht is not deep enough, i need at least 18 mm, so better 20mm the next time.

[Tibuck19]

Nice coil. Looks good,
i think you can remove the spider arms to reduce the weight, or just two of them.

My problem now is that my housing depht is not deep enough, i need at least 18 mm, so better 20mm the next time.

Things looks a lot bigger on paper and in the cad software doesn't it loll, that's good thing about 3d printers, in total the coil probably cost a only a few dollars in plastic, Not bad when you think of all the experience you gain out of it .

[Tibuck19]

I will use fiberglass strips as amendment in the resin to make the whole coil stiffer, epox resin is very fragile.
Maybe i will post a picture when its done.

I suggest to use glas bubbles or micro ballons to save weight for your coil. Look at this video here.

https://www.youtube.com/watch?v=XnrStRklcUQ&t=190s

Today I finished in this way, an adjustable coil for bandido/tgsl and it is working excellent.[/QUOTE]

Very interesting video, nice b rolls hahaha.

[blobber]

Well, this was my last coil with this shape, long time ago I had made several coil housings with this shape. For the next coils, I want reduce the dimension of the arms in my positiv form, maybe 5 mm. Without them, I think I get problems, when the coil hits a big stone in the field.
The coil adjustment is working pretty well.

[BKY1337]

My new model has 208 grams. How much weight has a normal 28cm Coil housing?
I will need about 400ml epoxy resin how much will this add?

[Hyena]

Epoxy has density about 1.25 kg/m3, so 1.25 * .4 = 500g

[Tibuck19]

Just for knowledge sake, my 3d printed 10 inch coil with epoxy filled cavity is 575G total

[BKY1337]

700 g sounds a bit too much.

[BKY1337]

PLA ,0.3mm Layer thickness , 0,4mm Nozzle

[homefire]

If you put the supports on the inside it would look a lot netter.

[BKY1337]

Good idea, but i need the place inside , i have just 16mm depht and i need every mm.
I need to make the edges more round at the next one.

Edit: Sorry i missunderstood you. I thought you mean the clamps.
I was not sure about bed adhesion with supports.
Its still glue at the surface and i have not removed the edges.

[homefire]

I would think the Supports being within would just give the potting something else to stick to.

[Tibuck19]

[ATTACH]39410[/ATTACH]
[ATTACH]39411[/ATTACH]
[ATTACH]39412[/ATTACH]

PLA ,0.3mm Layer thickness , 0,4mm Nozzle

Looking good, could I offer a suggestion for next ones, you could add a chamfer to the outside and inside, to save on print time and plastic and lower the bed surface to reduce warping if you print them in abs , seeing how you don't need all that flat surface. it would also save in weight and reduce the amount of resin. But for your first coil housing , I have to say you done well.

[BKY1337]

Yes, also the 20mm space at the outside is way too much. I added a chamfer but only 2mm. It looked different in my CAD program.
For the next one maybe 10mm radius. It's harder to print with bigger chamfers, im not sure if it warps when i print it upside down.