New Compressed Air Hit n Miss Engine

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cfellows:
Thanks again, folks for all the encouragement and positive comments.

I decided to do the base a little differently than in the original picture. I had planned to use quarter sections of steel pipe to create a cove moulding like I did with the radial. Instead, I'm using 3/8" thick angle iron. I picked up a piece of 2" x 2" by 26" at my local metal yard, brought it home, and cut it down to the size I needed, 1.375" x .625". The bandsaw made this job easier, but it was still a bit tedious to rip it down, not to mention a little hard on my arm muscles keeping the pressure on the feed. Next the piece will be cut down to the proper lengths with 45 degree angles to form miter joints on the ends. The 5/8" leg will be on the bottom, with the cut edge out to form a kind of cove. The base will have 1/4" thick steel plate welded on the top so the total height of the base will be 1.625"

Here's a picture of the base pieces

And here's a drawing with the governor and the new base

Chuck

cfellows:
Here's some more pictures of the base taking shape. These are probably not interesting to all of you, but thought I'd show them anyway. So far I have about 5 hours into the base alone.

This is just a pic of me using an indexable cutter to smooth the bandsawed edges.

This is just two views of the lashup on my bandsaw to cut the 45 degee mitre on the first end. The angle iron is mounted upside down with a spacer indexed against the back of the built in vice. Another spacer is used underneath to raise the workpiece high enough that the clamps could find purchase on a flat spot on the back of the vise. C-Clamps are used to hold the work rather than the adjustable portion of the built in vice.

These are pictures where I'm cutting the 45 degree miter on the other end. Here, the angle is right side up.

Getting the pieces cut to exactly the right length was very challenging since it was hard to project where the blade would intersect the base of the cut. Exact length wasn't really important anyway, but getting the opposing sides the same length is important if you want a square base with tight mitre corners. So, I used a stop block clamped to the back of the fixed vice jaw to make sure the matching pieces were the same length.

Here's a few shots of the frame assembled but not yet welded. Outside dimensions measured around the bottom of the base is 5.75" x 6.75". The height of this part is 1.375". The thickness of the angle iron is 3/8".

Now I can cut out the plate that will form the top of the base.

saw:
It's just beutifull nice work :clap: :clap: :thumbup:

millwright:
Those bandsawn mitres look to have come out very good. watching the post with interest. have enjoyed your previous projects.
John

cfellows:
Thanks again, for the comments and encouragement. Here's a couple more pictures.

The first picture is the base dry fitted with the top. The top is made from 1/4" thick cold rolled steel, 5.5" x 6.5"

And, here is the first of 2 pictures of the parts I finished so far, dry fitted.

And, a second picture with the soda can for scale.

Chuck

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