No need for a square hole at all: make the tool 1/2” longer and cross drill for a Tommy bar.
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Tips/Techniques Making the Square Drive hole in a custom socket.
- Thread starter Susquatch
- Start date
Tips/Techniques
140mower
Don
You are not wrong there…...... except that the shaper drills very poor holes.
Ya, I might just do that anyway. I like making tools for my tools for my tools......
Yes, that method was discussed in post 13 and 14. It's the easiest solution by a very wide margin. 50 bucks isn't bad at all compared to the OEM Volvo tool. I am surprised to see it for sale though.
The other easy solution is to fit a stub into the end and mill a nut onto it.
But I think it's more important to help my 3 grandsons make something for their dad and see how 4 shop machines can be used to make stuff like a cool tool for their dad.
mickeyf
Super User
I skipped from the first page to here so this may be a repeat, but to avoid welding I'd buy a socket from the Habitat for Humanity store for a buck or so, and press fit it into the appropriately bored pipe after shortening it. Throw in some loc-tite if you like, but I have found that a properly done interference fit is every bit as strong as a weld. Downside - you don't get to play with the shaper. It's also a different set of lessons for the kids, but they should know about interference fits too.
The rule of thumb I learned was one thou larger than the hole size for every inch of diameter, but if you have a beefy enough press you can double that or even more depending on the material, and that thing ain't never comin' apart. I'd guess that in your case the wall thickness of the pipe would be the limiting factor. I also like to turn down the part entering the hole to a slip fit to ensure that it starts straight - maybe 20 thou or so if your part can afford that.
The rule of thumb I learned was one thou larger than the hole size for every inch of diameter, but if you have a beefy enough press you can double that or even more depending on the material, and that thing ain't never comin' apart. I'd guess that in your case the wall thickness of the pipe would be the limiting factor. I also like to turn down the part entering the hole to a slip fit to ensure that it starts straight - maybe 20 thou or so if your part can afford that.
ChazzC
Ultra Member
Back when I (and you) was very much younger, Kent-Moore (a division of GM) would sell OEM special tools & manuals to anyone who had the money (pots of it) to buy them.
Early in life, I learned that public libraries got a special deal on hardcover copies of manuals. If you spilled coffee in them you had to pay a very fair price for a new copy and got to keep the old one.
I also learned that the dealers would let you visit their shops and inspect their special tools. That's how I became interested in drafting. I also made a lot of special tools for myself and my friends back in those days.