Several Interesting Tool Projects

External Hone

External Hone

I'm embarrassed to say I was a  toolmaker  for a long time before I heard about external hones.  There came a time when I found I needed just such a tool so I made one.  It uses a replacement stone from an automotive brake cylinder hone but others could be employed.

Between Centers Boring Bar

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There are times when you need a long straight bore in the lathe and a between centers boring bar is the right tool.

Micrometer Adjustment

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I ran across a design that implemented a shop made cartridge that could be advanced with a graduated screw for size setting.

Boring Bar Cartridge

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The clever design (not mine) captures the screw in a smooth bore, but turning the screw advanced the cutter via the partial thread in the toolholder cartridge.

Everede Tool Bit

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Everede makes a line of conventional boring bars utilizing a triangular tool bit.  Clearance angles are automatically taken care of.  This was a good application for the small space.  The triangular space was produced by brazing an assembly and then tapping and turning down to size.

Carriage Stop

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This could be either a indicator for carriage movement or an adjustable hard stop.  This is an Atlas lathe with flat ways so the clamping mechanism works front to back.

Hard Carriage Stop

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The stop can be mounted on either side of the carriage as needed and the indicator swapped for a shop made micrometer stop.

Cam C,amp

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For a smooth clamping mechanism without a tendency to shift the position, this has a simple eccentric with a small bearing mounted.