1/16 Bucyrus-Monighan Walking Dragline

[pugs]

It's called a sensitive drill adapter chuck. Allows you to feed the bit down by finger pressure.

Great looking work on the dragline!

[Stefan]

Very impressive work, Steve! I like the idea (whether intentional or not) of accepting some partial "simplifications" to have an operating model as soon as possible, and then later perfecting the parts concerned.
Stefan

[9W Monighan]

Originally Posted by RCP57

All I can really say is WOW! Beautiful work!

Originally Posted by oztruck

I enjoy watching machines working very much, but watching you work on the machine is inspiring. XLNT job.

Chris

Originally Posted by Stuff

it grows even more!

Originally Posted by Espeefan

The new updated towers and bearing blocks look incredible! Wow. So the time to cover all the inner workings of the machine is getting closer? Will you actually do it? It's really amazing to look at, and watch the drivetrain parts do their thing. All the design and engineering, not to mention the metal work that went into this model. Almost a shame to cover it with a cabin! I'm sure you'll make removable, but it's been a real treat to watch the model evolve through the last couple years. It just keeps getting better and better.

I will say I've learned a couple things from your machining process photos. Fixturing and drilling those tiny holes. What kind of adapter are you running for drilling the rivet holes? It looks like a mini chuck, but you are supporting the bit with a free floating collar of some kind? Any more info on that?

Originally Posted by pugs

It's called a sensitive drill adapter chuck. Allows you to feed the bit down by finger pressure.

Great looking work on the dragline!

Thanks guys. Been wanting this part done for quite some time.
Espeefan,Pugs is correct on the sensitive chuck. I had to use it because I couldn't get all four plates to hold down tightly together. I broke a couple drill bits before I used the finger chuck.
I intend on covering the frame and have some of the panels removable, but it will take a while still because I still need to make the curved roof trusses and the operators cab that contours with the main roof.

Originally Posted by Stefan

Very impressive work, Steve! I like the idea (whether intentional or not) of accepting some partial "simplifications" to have an operating model as soon as possible, and then later perfecting the parts concerned.
Stefan

Glad you noticed my simplified parts. When I started this machine several years ago, I never dreamed I would be building this as close as I am to the 1:1 Help from others and getting permission to crawl all over the 1:1 has made a huge difference on my build.