Author Topic: Mini Mini Ratchet Wrench  (Read 1043 times)

Offline gbritnell

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Mini Mini Ratchet Wrench
« on: August 12, 2021, 11:50:53 PM »
Gentlemen,
After seeing Chris's mini ratchet wrench I had to make one. I went to the Wiha website and ordered all the small Imperial size sockets. As it was they were all on sale. I wanted to have it ratchet both directions so I took my 1/4 inch drive Craftsman ratchet apart and started measuring all the parts. Once I had everything drawn I scaled it by 1/2 which made the overall length 2.60 inches long.
The ratchet wheel blank was drilled in the corners then through the center. This gave me a close approximation of the hex size for the sockets. (4mm) I then filed the corners out and fitted each socket into the wheel blank. The ratchet teeth were duplicated in scale by cutting with a home made V cutter. The ratchet wheel has 36 teeth. I drew up the ratchet selector pawl and planned out the machining steps to duplicate it in 1/2 size. The handle is made from aluminum. I drilled the necessary holes and then bored for the ratchet wheel and pawl. This was done on the mill. I then mounted it in the 4 jaw chuck in the lathe and indicated the hole true and flat. This was to cut the slot for the 3/8 inch retaining clip. The handle is through drilled for a rod with a ball end to sit against the pawl. This was made from drill rod and the ball tip was hardened. On the other end I silver soldered a washer for a spring to sit against. On top of the spring is a follower rod which is held in place with a 5-40 set screw at the end of the handle. The small selector lever was machined and fixed to the pawl shaft with a 0-80 flat head Phillips screw. To hold the sockets in place I tapped the ratchet wheel for a 2-56 socket head set screw. This only retains the socket as the hex does the driving.
Talent unshared is talent wasted.

Offline gbritnell

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Re: Mini Mini Ratchet Wrench
« Reply #1 on: August 12, 2021, 11:53:04 PM »
The 4mm hex on each socket was longer than needed so each socket was cut so there was just a small projection on the outside.
Talent unshared is talent wasted.

Offline crueby

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Re: Mini Mini Ratchet Wrench
« Reply #2 on: August 13, 2021, 12:46:54 AM »
That's beautiful George!  What was the final outside diameter of the head of the handle?




So, what shall we build in miniature next for the toolbox?!


 :ThumbsUp:

Offline propforward

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Re: Mini Mini Ratchet Wrench
« Reply #3 on: August 13, 2021, 01:49:49 AM »
Absolutely astounding, lovely work as always.

Stuart

Forging ahead regardless.

Offline gbritnell

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Re: Mini Mini Ratchet Wrench
« Reply #4 on: August 13, 2021, 02:09:02 AM »
The head diameter is .75 .
Talent unshared is talent wasted.

Offline propforward

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Re: Mini Mini Ratchet Wrench
« Reply #5 on: August 13, 2021, 02:18:55 AM »
Time for a micro mini ratchet?
Stuart

Forging ahead regardless.

Online Admiral_dk

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Re: Mini Mini Ratchet Wrench
« Reply #6 on: August 13, 2021, 01:37:31 PM »
Great looking result - the bits almost look too big for the handle  :cheers:

Offline RReid

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Re: Mini Mini Ratchet Wrench
« Reply #7 on: August 13, 2021, 03:04:44 PM »
That truly is a Craftsman tool. Too bad that label is already taken...
Regards,
Ron

Offline bent

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Re: Mini Mini Ratchet Wrench
« Reply #8 on: August 13, 2021, 03:54:38 PM »
Just use a small c and apostrophe s:  craftsman's tool.

Offline steamer

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Re: Mini Mini Ratchet Wrench
« Reply #9 on: August 14, 2021, 12:15:27 PM »
Sweet George!....

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!