Since making the above statement I have been on youtube investigating 3D Printing.
and
Yes there is
Laser 3D Printing (see #2 Below: SLA)
I have learned that there is a few different technologies in 3D Printing.
1) The first is FDM:
It 3D Prints using plastic filament such as PLA, ABS, Nylon, Flexible PTG and on and on
Here is a example of a FDM 3D Printer:
2) Next is SLA: 2 kinds: UV Laser & Resin or UV Light on Light Hardening Resin.
*This 3D Printing base has a vat / container filled with UV Curing Resin and a UV Laser.
The UV Laser is located below the UV Resin and cures the UV Resin a layer at a time.
* There is also a Resin that hardens in UV light (different from the resin used with a UV Laser) usually in dark light resistant bottles because the resin will begin to harden once in UV light and a UV light source from below cures the 3D image.
This IS a LASER 3D Printer:
3) Color Jet 3D Printing:
This IS what
ShapeWays uses...
It prints layer by layer in a bed of Powder.
It uses a glue to hold it together.
The glue also holds the pigment and then the piece is dunked in like a Super Glue to give it it's strength and then coated with a UV resistant coating.
This is not generally done at home and is more of a professional 3D Printing solution but that will probably change with time.
If you go to the link for ShapeWays what happens is a Designer / Developer sends the Software Design for whatever is being printed and ShapeWays prints the object and then it is sold with both gaining revenue.
I do not know what ShapeWays charges for the manufacturing of the 3D object.
So if you see a Mag baseplate or other 3D Printed gun part at ShapeWays it's not being sold from someone sitting at home with a 3D printer and making the part for .04c
It's more of a Symbiotic relationship between the parts Designer and ShapeWays Manufacturer.
Like most free enterprise: Design, Manufacturing Costs then Sales & Distribution.
ColorJet 3D Printing Video:
Video discussing 3D Technologies.
There is also 3D Printing with Clay and others not listed here..but I think this is a good start with the most common forms of 3D Printing.
So there you have it...
If you wonder how that gun part was 3D printed you now know more.
You can of course Design it and just do it yourself
OR
Maybe be a bit happier just paying the $$$ and let someone else do it for you... because you have much better things to do! LOL!