36 hours - For this purpose I think we are good. http://electronicsam.com/images/greenmachine/IMG_20210320_072206.jpg
Next I think a destructive torque test and then maybe some actual cutting... I need to finish the face plate first though. On Fri, Mar 19, 2021 at 11:16 PM Chris Albertson <albertson.ch...@gmail.com> wrote: > If you wanted a more durable part, you can send the STL file out to a > service that prints it in stainless steel. You might change the design to > reduce the bulk because they charge by the gram for the steel. > > SpaceX is printing pre-burner parts for their new Raptor engines. If > anything needs to be durable it is rocket engine parts. I've read about > turbine engine blade retainers being printed in Inconel too. It is not so > expensive if you think to reduce the weight of the parts. > > On Fri, Mar 19, 2021 at 5:10 PM Gregg Eshelman via Emc-users < > emc-users@lists.sourceforge.net> wrote: > > > 3D printing fixtures to hold things you've 3D printed can be done the > same > > way. Put two cubes side by side with a bit of gap between. Position the > > object at the divide so that it's half embedded in each cube, with no > > undercuts. Subtract the object from both cubes. Print the cubes and you > > have blocks to clamp in a vise to hold the object for more operations > like > > drilling, tapping, pressing in threaded inserts etc. > > > > > > On Friday, March 19, 2021, 10:53:55 AM MDT, Chris Albertson < > > albertson.ch...@gmail.com> wrote: > > > > When I first saw this, my idea was to print the internal tooth gear > > "backward" as a mold that makes up the central space in the aluminum > > housing, then pour in an epoxy/glass composite paste. > > > > I've seen this done on other projects, the most complex is a prosthetic > > hand I'm slowly working on. The designer made the "finger bone" in 3D > > printed plastic, then you put it inside a hollow 3D printed mold and pour > > in polyurethane resin which "over-molds" the plastic core. It makes a > > very tough non-slip fingerpad. Seeing this got me thinking about what > I > > call "hybrid design" what you combine 3D printing with metal and resin > > casting. It sounds complex but if you have a 3D CAD system and a printer > > mold-making is nearly trivial, Use the part you want to make and subtract > > that from the inside of a brick. > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > -- > > Chris Albertson > Redondo Beach, California > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
