Last week, we talked about a few of the 3D printing technologies that are on the market. Today’s blog post is a continuation of last week’s post, with even more 3D printing methods to discuss!
DLP
Digital Light Processing (or DLP) uses a projector to cure photopolymer resin. DLP printing is very similar to SLA, the differencing being the use of a safelight instead of a UV laser. Also, like SLA, DLP creates highly detailed objects with very little visible layers. And while DLP can print much faster than SLA, the objects printed have similar properties. Benefits of DLP printing include:
- Highly Reliable System
- High Quality Prints
- Easier to Maintain than SLA Printers
- Cheaper than Most SLA Printers
MJF
Multi Jet Fusion (or MJF), developed by HP, is unique in that it uses inkjet to create a 3D-object. An inkjet array selectively applies fusing and detailing agents across a bed of nylon powder, which are then fused by heating elements into a solid layer. This process repeats itself until the object is formed. After that, the entire powder bed is moved to a processing station where loose powder is removed and then bead blasted and dyed. Benefits of MJF printing include:
- Lowest Cost to Print
- More Design Flexibility
- No Supports Needed
- Benefits of Being Backed by HP
DMLS
Direct Metal Laser Sintering (or DMLS) is one of the best ways to make functional metal prototypes and parts. The process begins by sintering each layer with a laser aimed onto a bed of metallic powder. The powder is then micro-welded and the process is repeated layer by layer until an object is formed. Benefits of DMLS include:
- Ability to Print Complex Parts
- High Quality Prints
- Rapid Print Speed
- Print is Strong and Durable
EBM
Electron Beam Melting (or EBM) is very similar to SLS printing. There are, however, several key differences- the most significant differences being that the energy source comes from an electron beam instead of a CO2 laser, and that EBM printers work with conductive metal instead of thermoplastic polymers. The benefits of EBM printing are:
- High Density Prints
- Fast Printing Process
- Non-Sintered Powder can be Recycled
- Fewer Supports Needed
3D printing has evolved and expanded since it’s beginnings in the 1970s. Since then, there have been several different 3D printing technologies created, each with their own pros and cons. Regardless of material used, time and budget, there is a printer for you.