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Unread 29-01-2014, 19:56
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Re: Practical 3D printed parts

We like to use 3d printing for prototyping and replacing/modifying COTS plastic parts. We are currently using 3d printed parts to interface with colson wheels, as thicker versa hubs, spacers, and as a replacement for the battery mounting bracket. In the past we have printed pulleys, wheel inserts, and even 80-20 end caps.
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Unread 29-01-2014, 20:39
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Re: Practical 3D printed parts

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Originally Posted by RobotDoktor View Post
We like to use 3d printing for prototyping and replacing/modifying COTS plastic parts. We are currently using 3d printed parts to interface with colson wheels, as thicker versa hubs, spacers, and as a replacement for the battery mounting bracket. In the past we have printed pulleys, wheel inserts, and even 80-20 end caps.
We made a load of hex spacers yesterday for use on our competition robot.
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Unread 30-01-2014, 01:56
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Re: Practical 3D printed parts

So far, about half of our practice bot is made of printed parts, mostly because we needed more stuff from vex pro than we could reasonably get in time. Nearly all our gussets, some of our HTD pulleys, and our battery box. Of course, the competition bot won't have all this stuff (though the box will probably stay), but it made our build much quicker and more economical.
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Unread 30-01-2014, 06:47
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Re: Practical 3D printed parts

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Unread 30-01-2014, 09:07
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Re: Practical 3D printed parts

We print out battery holders. They have our logos on them and they have strain reliefs for the wires. Plus, it makes them way easier to hold and are plenty strong.
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Unread 30-01-2014, 09:13
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Re: Practical 3D printed parts

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Originally Posted by Chadfrom308 View Post
We print out battery holders. They have our logos on them and they have strain reliefs for the wires. Plus, it makes them way easier to hold and are plenty strong.
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
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Unread 30-01-2014, 09:18
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Re: Practical 3D printed parts

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Originally Posted by eddie12390 View Post
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
I tried looking for a picture, but I couldn't find one. I'll post a picture of one tonight or tomorrow, as well as maybe the STL file
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Unread 30-01-2014, 10:00
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Re: Practical 3D printed parts

We've printed a few things that have come in handy.

First, we printed some brackets designed to hold 4 pneumatic storage tanks on the robot. It was a pretty nice solution overall, and allowed us to stack them much easier than we otherwise would have been able to (half hour to design, then a day worth of printing instead of several hours of manual work to make something similar by hand).

Then one of our students came up with a design for a winch that really looks awesome. We used a winch last year as well, but that was all hand made and had issues occasionally where the strap would jump off and get tangled. I plan to get some pictures of that setup and the new setup for this year to show a comparison - your mind might be blown at how big a difference it is, and again it saves work hours on the robot! The winch last year, for all its simplicity, took a long time to actually get together. This year, all the complexity is designed in half an hour and printed!
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Unread 30-01-2014, 10:08
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Re: Practical 3D printed parts

We used ours to print shaft collars... lots and lots of shaft collars...
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Unread 30-01-2014, 12:16
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Re: Practical 3D printed parts

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We used ours to print shaft collars... lots and lots of shaft collars...
Us, too. Delicious, lightweight, very very purple hex shaft collars!
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Unread 30-01-2014, 12:25
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Re: Practical 3D printed parts

We're printing a radio / camera / sensor tower that mounts onto the corner of our drive frame. We will still probably protect this with an overall polycarbonate shroud once everything is on the robot.
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Unread 30-01-2014, 13:30
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Re: Practical 3D printed parts

11's kids printed off what they're calling "Talon Towers," just a simple way to stack Talons for some space savings.

https://www.facebook.com/photo.php?f...type=1&theater

http://i.imgur.com/LfiXK5t.jpg
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Unread 30-01-2014, 14:37
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Re: Practical 3D printed parts

Quote:
Originally Posted by Akash Rastogi View Post
11's kids printed off what they're calling "Talon Towers," just a simple way to stack Talons for some space savings.

https://www.facebook.com/photo.php?f...type=1&theater

http://i.imgur.com/LfiXK5t.jpg
Slightly off topic, but I had one of our electronics guys ask me about how well that would work without fans. Have you run that setup (or similar) before, and if so, id you notice a performance difference between the Talons with fans or Talons without fans?

(I'm not an electronics guy, so I'm just repeating his questions).
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Unread 30-01-2014, 17:46
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Re: Practical 3D printed parts

How durable are 3D printed parts? Our team doesn't use them.
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Unread 02-02-2014, 16:10
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Re: Practical 3D printed parts

Quote:
Originally Posted by eddie12390 View Post
Could you upload an example image of the CAD or of a real life example? That sounds like an interesting use of a printer.
The yellow one is last year's and the purple one is this year's new, more beefy, battery handle

We are still working on the printing. We are trying to make it more easy to print
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