Category Archives: 3D Printing

3D Printers

Smaller RepRap style 3D printer that 3D Parts Manufacturing is offering
Smaller RepRap style 3D printer that 3D Parts Manufacturing is offering.

Many makers have or use a 3D printer. I’m sure there are some here in Putnam County already, but I’d like to see a publicly available one. I’m personally building a 3D SLA printer with some help from some other folks, but would love to connect with other folks near Greencastle that have a 3D printer. Respond to this post or send me an email if you have one. There’s a certain amount of learning in making these work & we can build our skills/knowledge together.

Last week I was able to visit 3D Parts Manufacturing in Indianapolis to see their operation. Neat operation and Kim Brand is doing some real interesting things around 3D printing. If you just look at their website you’d get the impression that they’re mainly involved with the high end 3D printers, and they certainly have those, but they’re also working on creating a program for middle school kids that includes a 3D printer, support, and the lessons to go with it. An IBJ reporter was there the morning I visited and an article on what they’re doing just came out in this week’s Indianapolis Business Journal. I’m hoping to get Kim over here to Greencastle later this year.

There are several different types of 3D printers, explaining some of the nomenclature can help you understand those types.

3D printing is an additive process vs. the traditional subtractive machining used with CNC, lathes, and many other traditional fabrication tools. One of the real breakthroughs in more affordable printers was the open source printers that first started appearing in 2005. Many of these were based on the RepRap design goal to create a machine that could print most of its parts. The RepRap based designs, and most current printers less than $1000, use Fused Filament Fabrication (FFF) which extrudes a thermoplastic. But other options are starting to appear including some lower cost Stereolithography (SLA) designs. SLA has traditionally been one of the more expensive 3D printing methods because of the material cost and laser control. I’ll write something on low cost 3D printing methods and the equipment we’re looking at for Castlemakers in a future note.