Building and Finishing Tips for 3D Printing
Earlier this year, 3DP Unlimited showcased its 3D printing capabilities at the MD&M East show.
Leslie: Hi This is Leslie Langnau, I’m the managing editor at Design World Magazine, and we are here today at the MD&M East show in New York. I’m here with John Good of 3DP Unlimited. John, you were showing me something a little interesting here, this was all made with FDM (FFF). But as we know, FDM (FFF) tend to have a lot of stair steps. But you?ve got this gorgeous finish here, how did you do that?
John: What we have here is a gas tank, image you are trying to go and put together a concept car, something that’s is reflective of the end use. Everybody is?familiar?with the stair stepping of FDM (FFF) and other 3D printing processes, and there is a perception that “oh my?goodness, I’m going to hire an army of people with sandpaper and bondo to go and make it look, literally mirror surface. But let me show you, do you see this side right here, do you see the fine surface? That’s because we have used something that’s right there in your local auto body shop uses for auto body scratch and dent. This is just a high build primer from PPG. It’s a perfect example of using some of the available post-processing technologies that have been vetted over the years, to enhance how people are using additive?manufacturing.
Leslie: That’s amazing, because so many people think that post processing has to be more?involved. Here you’ve done just a very simple kind of post-processing.
John: It works.
Leslie: We were also talking a little bit about inserts, and how you can pause the printing process and put the inserts in?
John: Yes, sometimes people think 3D printing is only for prototypes, but it’s progressing so far beyond that. People want to do fixuring, jigs etc, where they need more than just plastics. So one of the things that we are showing today, is the ability to go ahead and pause an FDM (FFF) print, and this is only doable on a FDM (FFF) machine. You pause the print, and insert?fasteners, electrical conductors, piano hinges, whatever the case might be that will add to the utility that part you are making to make it appropriate for end use. Just a couple of examples, do you see this beautiful chair? People love sitting on this chair, it’s fun and neat. Let’s say I want my chair to be even fancier, and I wanted a little reading light here. The ability do go ahead and pause your print, and run a conductor inside the print, to have the wire in cased within your print. This is an example that relates to the furniture, but there are many examples of this related to jigs, fixtures, test stands. where you need a combination of mechanical fit, electrical fit,?fasteners. The good news is that you can?incorporate?all of those?facets?into an overall additive manufacturing strategy.
Lesile: Thank you so much John, appreciate your information.