3D Printed Block & Tackle

[Ulma Doctor]

i had a small scale (20mm) 3d design and print project that i was working on that snowballed into another thing.
3d printed block and tackle
not for any type of practical use, other than suspending a bicycle, or maybe an outside movie screen.
if the designs were to have actual potential, i would copy them in steel or aluminum, maybe even delrin

i used tinkercad to mock up the different designs and printed the results

the first design is a 4 piece double pulley design, printed @30% density in PLA
the cross pin is black PLA

the second design used 1/4 rod for the axles
the 3rd
design uses 1/4" bolts for the axles

i have plans to do a torture test to see the limits of both designs, to see if they are worthy of further development.

i'll post results as i destroy them!

as always, thanks for reading!

 

[Aukai]

Interesting stuff the 3D

 

[MrCrankyface]

If you increase your perimeters and infill those pulleys could probably handle quite a bit of load!
I made a 3D-printed pulley system that I've been using a few times per week for almost 3 years now and it's still holding up.

I added a time stamp so you can just see the part in action and the kind of load they're under.

Looking forward to seeing how your pulleys perform!

 

[Martin W]

That is really cool. I bet they are pretty strong.
Cheers
Martin

 

[C-Bag]

i had a small scale (20mm) 3d design and print project that i was working on that snowballed into another thing.
3d printed block and tackle
not for any type of practical use, other than suspending a bicycle, or maybe an outside movie screen.
if the designs were to have actual potential, i would copy them in steel or aluminum, maybe even delrin

i used tinkercad to mock up the different designs and printed the results

the first design is a 4 piece double pulley design, printed @30% density in PLA
the cross pin is black PLA

View attachment 371949View attachment 371950


the second design used 1/4 rod for the axles
the 3rd
design uses 1/4" bolts for the axles

View attachment 371951View attachment 371952View attachment 371953

View attachment 371954

i have plans to do a torture test to see the limits of both designs, to see if they are worthy of further development.

i'll post results as i destroy them!

as always, thanks for reading!

Testing to destruction is the stuff. Thanks for sharing your momentary obsession

 

[MikeWi]

If you ever want to get really technical about printing strong parts, check out CNCKitchen on Youtube. He's a German engineer who does some interesting testing on what makes a strong print and what different filaments are capable of.

 

[vtcnc]

i had a small scale (20mm) 3d design and print project that i was working on that snowballed into another thing.
3d printed block and tackle
not for any type of practical use, other than suspending a bicycle, or maybe an outside movie screen.
if the designs were to have actual potential, i would copy them in steel or aluminum, maybe even delrin

i used tinkercad to mock up the different designs and printed the results

the first design is a 4 piece double pulley design, printed @30% density in PLA
the cross pin is black PLA

View attachment 371949View attachment 371950


the second design used 1/4 rod for the axles
the 3rd
design uses 1/4" bolts for the axles

View attachment 371951View attachment 371952View attachment 371953

View attachment 371954

i have plans to do a torture test to see the limits of both designs, to see if they are worthy of further development.

i'll post results as i destroy them!

as always, thanks for reading!

YT video?


Sent from my iPhone using Tapatalk

 

[Janderso]

I'm thinking the breaking point will be the base of the mounting ring.
Pretty cool Mike.
A video of destruction would be fun.

 

[RJSakowski]

The pulleys are in compression and should hold hold up well.there is shearing stress from the axles on the side walls. The eyes are under tension and I'll bet they fail first.

 

[Ulma Doctor]

Interesting stuff the 3D

this stuff is AMAZING!!!
the possibilities are infinite!!!!

If you increase your perimeters and infill those pulleys could probably handle quite a bit of load!
I made a 3D-printed pulley system that I've been using a few times per week for almost 3 years now and it's still holding up.

I added a time stamp so you can just see the part in action and the kind of load they're under.

Looking forward to seeing how your pulleys perform!

i'll be sure to check him out!
thank you for sharing the video, i have no doubt it will be very useful!

That is really cool. I bet they are pretty strong.
Cheers
Martin

than you Martin! we shall soon see!!!

Testing to destruction is the stuff. Thanks for sharing your momentary obsession

if only i could get paid to destroy things for money....

If you ever want to get really technical about printing strong parts, check out CNCKitchen on Youtube. He's a German engineer who does some interesting testing on what makes a strong print and what different filaments are capable of.

thank you for the heads up, i'll check him out.
thanks for sharing the information!

YT video?


Sent from my iPhone using Tapatalk

since you asked, i'll do a summary of the results!