johnsmachines

machines which I have made, am making, or intend to make, and some other stuff. If you find this site interesting, please leave a comment. I read every comment and respond to most. n.b. There is a list of my first 800 posts in my post of 17 June 2021, titled "800 Posts"

Trevithick Dredger Engine Base.- 3

Just a quickie.

One of our GSMEE members, Stuart Tankard, solved the base issue on his most recent engine build like this….

20190203_183226.jpg

Those bricks are CNC’d out of aluminium bar.

Reader Huib suggested that if I follow suit, I should program in some imperfections!

Maybe I will ask Stuart to make my base.  (relax Stuart.  I wouldn’t do it to you.)

Trevithick Dredger Engine Base -2

It is odd how the most trivial part of the model dredger engine, the base, seems to have occupied more consideration than any other parts of the entire boiler and engine.

Thankyou to those readers who have offered opinions about the base options.  The most common design preferred, including SWMBO,  was the brick base.  I am still thinking about that one.  Meanwhile, here is a photo of the engine sitting on the blocks of wood which I had cut yesterday.   Not joined yet.

IMG_7420.JPG

SWMBO opined that it looks a bit “bitsy” and clunky – (I always get an honest opinion from that one). To me it looks sturdy and believable and functional.  And it would be darker when finished.

Another really hot day here, so just an hour or so was enough in the workshop.  And this is what I made.    Can you guess what it is for?  It is made of redgum, a very hard dense Australian eucalypt.

IMG_7422.JPG

Held as firmly as possible in the 4 jaw, Center drilled, then 16 mm through drilled.  The check does not matter. 

IMG_7423.JPG

Then 30mm

IMG_7425.JPG

Then 49mm

IMG_7429.JPG

Then  bored to 60mm and split.   135mm long.

It will be used in the next workshop session.