USS MONITOR

ENGINE BUILD

Part 12+1 by Vince Cutajar

I started work on the eccentric strap extension and noticed that if I had to drill the 3mm holes in both items as per plans then they would not fit into each other.

I started by first rounding off the ends on the rotary table.  Usually when I need the rotary table I remove the vice, but today, after a long time, the penny dropped.  I can fit my 6" rotary table without disturbing the 5" milling vice.    This how they look on my X3 table.

Next I drilled the 2mm holes.  These should be 3mm tapped holes but I made them 2mm through holes.  I think the 2mm bolts look better.
I then separated both extensions with a hacksaw and faced the end with an end mill.
More work on the eccentric strap extensions.  Drilled and tapped 4mm the back of the pieces and then milled the 6mm slot.
Now that the extensions were finished, the material thickness for the eccentric strap was milled with a fly cutter until it fitted tightly into the strap extensions.
Now that the extensions were finished, the material thickness for the eccentric strap was milled with a fly cutter until it fitted tightly into the strap extensions.
Then they were drilled 25mm and bored to 26mm.
Made a jig to hold the straps in the rotary table so that I can mill the outside diameter of the straps.
Setup on the rotary table.  Used also the 1" vice to hold together the tongues of the straps.
Straps finished.  I removed the 1" vice when getting close to the dimension of the O.D. to see what I am doing.
After a little cleanup.
 
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