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"Little Machine Shop"
A radius turning tool lets you make ball shapes or radiused ends on your metal turnings. With the tool you can make convex curves up to 3/4″ in diameter in brass, aluminum steel, or plastic — you just mount the jig on your lathe’s tool post and swing the handle, which rotates the cutting tool in an arc.
Tapping threads straight can sometimes be a challenge. A lathe, drill press, or a lot of practice help the process — or you could use a tool like Big Gator Tools’ V-Tap Guide. A series of graduated holes in the V-Tap Guide keep the tap aligned perpendicular to the surface.
Big Gator Tools makes the V-Tap Guide from nickel alloyed steel, heat treats it, grinds the bottom flat, and chrome plates it. They also cut a V-groove into the bottom, which both gives the tool its name and allows you tap perpendicular holes on corners and round stock in addition to flat surfaces.
Will lasers make wigglers obsolete? There’s a case to be made that you can set up your mill faster and with less fuss with a tool like the pictured laser edge/center finder. Move the laser beam to the edge of the workpiece and zero your scale. You can just as easily locate the mill over scribed lines or center-punch divots by aligning the laser dot over them.
The finder is accurate to 0.001″ and the dot size is adjustable with a polarizing attachment. The finder uses SR44 batteries that last for over three hours of continuous operation; of course you’ll probably only turn on the finder for short sessions, so the batteries should last a while.
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