To qualify for B.O.M.

[Perry Rose]

[Gerald Arana]

Boy, that sure makes a $60 crankshaft seem cheap!

Thanks for posting that video.

Jerry

[John Rist]

How do I get to the rest of the videos on this build?   As a teenager I almost became a machinist.  I wound up in electronics school instead but I still have a love of machining.   

[RC Storick]

[John Rist]

Wow, I had E-mailed Mark Presling and told him that his video was posted on Stunt hanger and that we found his video very interesting.  I did not expect him to mention Stunt Hanger and my name near the end of the video.  Simply nuts!   

[RC Storick]

[Steve Helmick]

As a retired machinist, I'm following and enjoying this series of videos. I am a bit shocked that so much trust is put in digital calipers, particularly in this #3 video, on the crank and bushing. If our hero doesn't own micrometers, I'd be shocked. I think I have 3 or 4 0-1" micrometers; alas, none are metric.

Also interesting that the bushing was drilled, bored, and reamed in a 3-jaw chuck. I'd prefer bored soft jaws or better yet, collet chuck, to keep the bore rounder after removal from the chuck. When I was an engine lathe operator at Boeing 747 experimental shop, I was very fussy about getting parts round...despite our crappy lathes. 

I also found it amusing that the CAD drawing turned out to be wrong...something I struggled with when I was working. The CAD drawings were commonly WRONG, or dimensioned from all sorts of strange and useless places, so I had to bug the "engineering department" for useful information. My opinion is that CAD guys sometimes don't spend enough time looking at the drawing, unlike manual drafting. It's important to remember that there's always a way to screw things up!

I learned to always be suspicious, after getting a package of "planning", drawing and material on one occasion. The customer's drawing said "any aluminum", but the material I got was 1018 mild steel. Good thing somebody (me!) was paying attention. Thankfully, all that is 11 years in my past!    Steve 

[RC Storick]

[Jim Hoffman]

Today I had the pleasure of spending a few hours at the Craftsmanship Museum in Carlsbad California.  http://craftsmanshipmuseum.com/     Thank you Joe Martin for this incredible venue for machinists, engineers and craftsmen of all flavors.

 I learned that the Titan 60 glow motor is on permanent display at the museum. Photos attached.   Many of us watched Mark Presley fabricate it from scratch on YouTube.  Mark did have a raw casting and some machine drawings, but not much else.  The YouTube was excellent, and I know I learned a few things.
Here are some shots of the motor and display

[Dennis Nunes]

I learned that the Titan 60 glow motor is on permanent display at the museum. Photos attached.   Many of us watched Mark Presley fabricate it from scratch on YouTube.  Mark did have a raw casting and some machine drawings, but not much else.  The YouTube was excellent, and I know I learned a few things.
Here are some shots of the motor and display

I was very fascinated by the many jigs and assemblies that took Mark hours to make just so he could make a certain part or perform a machining operation. Incredible! It sort of reminded me of painting trim colors on a plane. You spend several hours taping and masking things off to do a 30 second paint job!

Dennis

[Motorman]

Yes, sometimes you have to make a tool to make the tool that does the job.


Motorman

[Crist Rigotti]

Yeah, that was a great series to watch on YouTube!
It's great to see it in the museum.