Efferman's Custom Parts

[efferman]

Eric, theoretical printing in steel is possible, but practical there would be a need for a win in a lottery. I prefer the version with the lego rollers.

[TeClem8]

Hi Efferman !

I already mentioned about this on youtube. Me too, I plan to make LEGO parts with a 3D printer.

I am doing this today with CATIA :

I'll print them Monday in my school.

I saw that you too had made a bucket. Can you tell me if it is strong ?

Works in progress,

best regards !

Edited June 5, 2015 by TeClem8

[efferman]

cool buckets, unfortunately i dont have made these buckets. someone had ordered them, but they dont have made a feedback

[oracid]

I'll print them Monday in my school.

I wish I was in your school !

Do you want to make them in black color ?

[TeClem8]

Hi Oracid ! I'm happy to see you here !

Yes, if black color is available, i make them in black.

But otherwise I make them in white and I paint them carefully in black.

[oracid]

Hi,

I was wondering what is the reason that made you choose nylon rather than ABS which is the original material of Lego?

[efferman]

Nylon is stronger and allows different shapes than abs printing

[oracid]

Thank you Eff.

Here are two excellent reasons that I will pass on to my friends on a French forum.

I myself intend to start in 3D printing and your experience is very valuable.

[Blakbird]

It's a tradeoff. Nylon is stronger than ABS (~70 MPa vs. 40) but is also less stiff and less resilient.

[Nevercallmebyneme]

Nylon, not ABS. This is interesting to know. Not that it will have any effect on whether or not I use any Efferman brand parts. The only valid question there is money.

I saw the strangest piece in a dream this morning but cant think how to describe it, shame it was and interesting piece that I would have tried to find a use for. It was like a frame with the Technic pin holes connected to a circle in the middle by little springs. Anyway it looked cool and I want that.

[Saberwing40k]

I saw the strangest piece in a dream this morning but cant think how to describe it, shame it was and interesting piece that I would have tried to find a use for. It was like a frame with the Technic pin holes connected to a circle in the middle by little springs. Anyway it looked cool and I want that.

??

Might the piece you want be like a spoked wheel, where each spoke is spring loaded? That could be interesting.

[Nevercallmebyneme]

??

Might the piece you want be like a spoked wheel, where each spoke is spring loaded? That could be interesting.

I'm not sure I'd have to see that to know.

[Moz]

Might the piece you want be like a spoked wheel, where each spoke is spring loaded? That could be interesting.

Something like this? https://www.kickstarter.com/projects/1205277475/loopwheels-for-a-smoother-more-comfortable-bicycle

[Nevercallmebyneme]

Something like this? https://www.kickstar...ortable-bicycle

I've seen that done in lego a few times. This part connected to the build on the outside frame rather than the inner circle. Like I said there will probably never be a build that needs this but I've dreamed in so now I want it.

[oracid]

Hi Eff,

One more question if you please. Does the Nylon much more expensive than the ABS ?

[efferman]

nylon is the cheapest option at shapeways

[oracid]

nylon is the cheapest option at shapeways

This is a good news ! Thank you.

[TeClem8]

Hey Guys !

My bugket are printed !

Part in ABS ivory

Support in PVA (dissolves in water)

Process time : 13h 40

cost : more 100 €

The little details are good !

And a littel test :

I'm very happy of this first 3D print !

@+ !

[efferman]

Cool

[oracid]

Hey Guys !

My bugket are printed !

That's a good job, congratulations!

Can you explain what the PVA is ?

[Tommy Styrvoky]

How strong are the printed parts? as If one wanted to produce stronger durable ones, the part could be sanded down to remove the grainy bits from the printer and create a mold and use resin to cast it, instead of printing.

[AndyCW]

Efferman,

Could you cook up some u-joints that are two studs in diameter instead of only one. Both the normal style and the slide style.

The added diameter should increase the strength of the part. Keeping them three studs long would be ideal. This design would likely not be able to achieve the extreme angles of other designs, but would offer improved strength.

On the current parts two things happen when subjected to extreme shock loads...

1. The 'ears' snap off.
   
2. The center cross moves too freely causing catastrophic wobble. Keeping the joint in a portal hub or similar manner prevents this, but when used for drive shafts they fail.
   

I'm using your joints in your portal hubs and they hold up, but when I use them on drive shafts they inevitably explode.

v/r

Andy

[efferman]

http://www.shapeways.com/product/C3292DMQH?li=user-profile&optionId=40244471

http://www.shapeways...tionId=57073918

What is with these parts for the balls of 8880 drivetrain?

[AndyCW]

I'll give those parts a try and let you know how they turn out. Thanks for the alternative recommendation.

v/r

Andy

[efferman]

Thanks for testing it