- Joined
- Nov 12, 2017
- Messages
- 391
Of all remedies, this is the most beneficial, a relief. Cutting a relief establishes a 'land'. Just as it sounds, that becomes solid mount.Stioc - If you find that the tool post still wants to rotate a bit, it may be because the area just around the mounting bolt is slightly domed. The cure for this is to chuck up the tool post, get out your old 4-way to hold the cutting tool, and cut a shallow relief (maybe .010") around the center hole and out to about ¼" away from the edge of the QCTP. This will place the friction (between the compound and the QCTP) at maximum radius.
View attachment 293720
The Grizzly design or tool post are compatible in theory, equivalent to any other lathe or post. The failure was execution of one, maybe both. Post less likely as it is ground. A particular relief depth is not the consideration, sufficient clearance is. Note entrance hole of bolt in compound, chamfer of thread not visible, and small chamfer in post. That alone MAY have been the issue. Tapping 'always' raises a burr. There also could be a wire edge remaining in post, where drill exited, not removed by small chamfer. Could keep post from sitting flat on compound.
There are so many fitments lacking relief cuts, which cost mere pennies during manufacture.
One more good reason to keep feeler gauges, Dykem and felt-tip pens handy. In 2 distinct colors........
It's time [again!] to define what some consider a mere hobby. BS! Anything done as a pastime, which is otherwise alike to industry, differs only as not for profit. In some countries that home shop IS the industry. Even profit not the best measure, we invest without hint of compensation, for what seems to benefit us alone.
When a country should collapse, who do you think will be up front getting it running? Those jokers sitting in cubicles?