Another Knucklehead, built via castings, as a Draw-Tech design, upscaled

[Scott_M]

That looks like nice unit! I am also a big fan of probes.
I am curious though, All of the different probing routines I have used for a bore do X twice.
The first one on X can be anywhere in the bore. Close to the center is good.
It then does Y
And then repeats the X probe routine to refine its position.
I have often seen it change X afterwards. Maybe only a few tenths, but it does "refine" it.

And like scottyp said " be careful in Z "
And the tool setter touch pad is also hard to live without after you use one.


Scott

 

[Foketry]

Lost PLA, Harley Davidson heads

I tried to make the heads with the lost PLA technique to avoid hours and hours of milling, some positioning on the milling machine. I thought it would be difficult to obtain cooling fins with a thickness of 1.3 mm but I wanted to try.
The technique for making molten aluminum penetrate very small thicknesses is to create a column of aluminum that generates pressure and keep the hot plaster mold at almost the same temperature as the molten aluminum.
Another solution is to use a vacuum pump that sucks the mold, but it is used for very small pieces such as gold rings .

the drawing

3D printed heads

the heads drowned in plaster

the finished heads (without machining)

milling of the combustion chamber and drilling

 

[The Ignoble Troll]

Those came out fantastic

 

[GreenTwin]

Beautiful casting work !
Most impressive.

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