I needed to round over the end of the recuperrator cylinder mount for my Deck Gun.
I could have used the belt or disc sander but I wanted it more uniform than it would be using that method.
The 4" rotary table is just about perfect for the small table top mill and that is the machine I wanted to use.
Rounding over was a snap and worked without a hitch.
A new pallet was designed with a few accessories that would be useful for many more jobs in the shop. 5/8" thick and 4" in diameter.
An arbor was made with a 5/16-18 thread for the center hole in the rotary table and 1/4-20 thread on the top end for clamping.
Length was made to be just enough for the part I was making. I can always make another one longer at a later date if needed.
Bushings were made to fit the arbor and the inside diameter of the part I was needing to round over. Extra bushings were made as well.
The first picture also shows some "bite" clamps and T-nuts that were made for future use also.
The two straps were made with unequal sides and that makes them more useful than if they had equal sides.
All threaded holes are 10-32 and the 4 pallet mounting holes are clearance drilled and counter bored for 10-32 allen cap screws.
T-nuts are of course 10-32 (Sherline special) with a twist.
I offset the holes from each end of the T-nuts so they would fit just inside the 4" diameter of the rotary table.
When the rotary table is set vertical it barley clears the milling table so I shortened one end of each T-nut.
The "bite" clamps are made from brass round stock that I milled hex using a collet block. They are Mighty handy.
Counter bored .104" deep with a thickness of .187". These are pretty low profile and made for 10-32 eccentric screws.
The screws were just button head allen screws that had the heads offset by .015" in the lathe. Custom arbor used that is not shown.
The bite clamps work against the two straps and make a great way to hold parts on the little table.
DXF files are provided in case anyone wants to build one.