1 1/2 inch Boring Head. I need one for light duty work inside of a crankcase. It will be Brass. Pic #1 shows flats for 3/4 wrench. Pic #2 Back side complete with 1/2-13 threaded mounting hole. This one is slightly altered from one by Stephen Campbell.
A change was in my plans, so a new base is being made. I had not givin a lot of thought for the mounting of the head. I used the 1/2-13 thread to use a home grown 1/2" straight arbor. The change came about because a MT2 Arbor is available with a 1/2-20 thread and also the 3/8-16 drawrod thread for under $6.00. The new base is to the left. It will utilize a 1" wrench.
Nothing like spending quality time with your machines. The bad habits of the world just seem to disappear.
Ready again to cut the Dovetail and the pocket for the inerds. There was a discussion on using air at the machine. That can of air (Computer Stuff bought on sale) is the only air I use. I have air drops in 6 places in the shop used for air tools only.
My hour in the shop is done. War Dept. watches close. Got gib blank done, made from an old gear. Also the adjuster is blanked in and just needs to be drilled and tapped 6-40. I get 2 more hours after 4:00 PM today. The flu is almost gone.
Yep -- Those are the prints I have, I only changed the mounting thread so far. The show a 3/4-16 and I went to a 1/2-20. I want to make a smaller one if this one works out. Maybe 1 inch in diameter isstead of 1.5 inch diameter.
HMMM -- I called the PO. Next day delivery on that would be $37.50. I could buy two more cutters for that price. :lmao: OK -- my morning hour in the shop is over. There are two parts left to make. The Dial (5) and the Keeper (7). I will finish the slide and make those last two parts this afternoon. All that should be left after that is the Dovetails themselves.
The brains (6-40 SHCS and part #4) in place. I need to make the keeper (part #7). The action is smooth at this point. If anyone wishes to build this little Boring Head I can supply the 6-40 SHCS if you can't find them.
Time to catch you guys up. Pic #1 is the keeper blank made from old gear blank (in arrows) Pic #2 is the Keeper blank in the mill Pic #3 Thr finished Keeper (.500X.303X.125) .070 slot. being made. Pic #4 The test fit (perfect) Pic #5 The adjustment parts installed and working extremely smooth. The SHCS in front is my spare..
Now the bad news (expected). UPS does not deliver on Saturday. I called and my tooling is in Watertown, 12 miles from here. They will not let me pick it up. I can have it emergency delivered for $67.75. Looks like it won't get done till Monday when my tooling gets delivered. I have gone as far as I can for now except the Dial. I want to do that last. See you Monday, same time, same channel. Good Night Mrs Kalabash whever you are.