• We want to encourage those of you who ENJOY our site and find it USEFUL to DONATE and UPGRADE your membership from active member to donating or premium membership. If you want to know the differences in membership benefits, please visit THIS PAGE:

    https://www.hobby-machinist.com/premium/

    Donating memberships start at just $10 per year. These memberships are in fact donations that help pay our costs, and keep our site running!
    Thank you for your donation, God Bless You
  • June Project of the Month (Click "x" at right to dismiss)
[4]

3D Printer

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

Fishchips

Active User
Active Member
Joined
Oct 4, 2011
Messages
87
Likes
0
#1
I went to Santa Barbara, CA for some meetings for work. During a tour we looked at the 3D printer, didn't get to watch it in operation but this is a chess piece they made. From the top you can see the spiral stairs and a helix from the top to bottom.

100_0580.jpg 100_0581.jpg
 

blindstar

Iron
Registered Member
Joined
Aug 28, 2011
Messages
26
Likes
0
#2
These are really cool machines. Her is an old video of one printing a functioning adjustable wrench: printing a wrench. Then for the extreme version this guy is using a "ink" made from living cells and is printing human body parts..
 
Last edited by a moderator:

brt

Active User
Active Member
Joined
Sep 19, 2011
Messages
42
Likes
1
#3
3DP's a great! They are a lot of fun. And great for teaching kids about Making.

But their current limitations make their applicability pretty limited:
1. Most printers use some form of thermoplastic (like ABS) to actually generate the object. It's pretty weak, especially since the object is constructed one layer at a time, so the bond between layers is not very strong.
2. The cheaper printers (like Rep-Rap and MakerBot) don't cost too much (you can build one yourself with a $1,000 kit), but their precision is not so great. The more expensive ones (like Stratasys and Z-Corp) can easily cost upwards of $15K. Their products cost can easily be $25/cubic inch produced
3. The most interesting devices are using some form of laser melting metals (like Direct Laser Metal Sintering by EOS). The produce very cool objects out of brass, stainless, even titanium. But the machines cost $250K and up, and so the results are even more expensive: a 1-2 lb part can cost $2,000

So at the moment, 3DP's are used two ways:
1. Learning - vast majority of printers are built by Makers to mess around with and to learn, and make cool things that are not going to be stressed too much
2. Rapid prototyping by companies, where the cost is less important than the time it takes to make a physical prototype or a plug mold

I'm working on helping 3DPs break through these limitations :)
 

geotek

Active User
Active Member
Joined
Sep 23, 2011
Messages
72
Likes
5
#6
I wonder if you can use a machine like the Rep-Rap to make wax masters for investment casting. It seems like it would not be all that hard to make an extrusion head for the hard wax.
 
[6]
[5] [7]
Top