Supporting > Additive Machining

Tower Spherical Engine (3d print project)

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BillTodd:
This started a decade or more ago when I animated the engine for Doug's museum of retrotech  (http://www.douglas-self.com/MUSEUM/POWER/tower/tower.htm). I have been wanting to build a physical model ever since.

The bulk of the engine will be 3d printed , mainly because making the spherical parts would require special tooling that I don't have. The other bits are all available on ebay ,so it should be possible for others to make the model .

The model engine is designed to run from a vacuum cleaner , to avoid the need to contain any serious pressure.

I started converting an old engraver project (itself made from an old plotter project) into a 3d printer (https://madmodder.net/index.php/topic,11263.msg152896.html#new) a few years ago and I'm still have some problems getting flat prints. On top of that an update has buggered my copy of the Marlin 3d print software (any Marlin/Arduino experts here?) and now it will not compile.


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AOG:
That’s a very interesting design. I will be following along. On the Marlin issue, most of the time I have problems compiling marlin is because I forgot to include the U8Glib library that runs the display. For your flat print issues, turn on Manual mesh leveling in Marlin and use a raft. There is a tutorial here  https://www.printedsolid.com/blogs/news/installing-marlin-1-1-6-on-your-cr-10s-with-mesh-bed-leveling. It’s intended for the Creality CR-10 but it may still be worth a look.

Tony

BillTodd:
Thanks Tony.

I managed to get Marlin compiling again (just a matter of deleting the old U8lib and reinstalling).

I'll have a look at that tutorial,  my bed is reasonable level but the problem I've been having is warping due to the bed heater not working (actually it does work but somehow trips the power o/p off at random!)

I'm now updating my model to add some extra clearance based on the prints I've made.

Bill

BillTodd:
Well printer is up and running again. Currently 3 hours into a 12 hour print of the base unit

update in 9 hours or so

ddmckee54:
Bill:

Just for giggles and grins, what sort of extra clearance have you found that you need to add?

Don

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