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Changing these gears varies the speed that the lead screw turns in relation to the speed that the spindle turns. This allows you to cut threads with different numbers of threads per inch. This calculator determines the correct change gears for any thread pitch.

Conversion Kits - LittleMachineShop.com

Metric threading kits let you turn metric threads on your mini lathe. All of our conversion kits come with complete step-by-step instructions. These parts change HiTorque mini mills to 20 thread per inch feed screws on the X- and Y-axis. Each rotation of the hand wheel will advance the table 0.050".

Dial Assembly | Thread Dial Indicator | LittleMachineShop

To cut true metric threads on a lathe with an Imperial (inch) lead screw (and vise versa) you can't just change the threading dial. You need our Metric Threading Kit which changes the leadscrew, half nuts and the threading dial. There is no threading dial available for metric threading.

Mini Lathe Kits | Mini Lathe Spare Parts - LittleMachineShop.com

Upgrade your mini lathe with metal gears, a longer bed, and more with these mini lathe kits. From spare parts to extensions, your machine will be up to speed.

Threading Dial Assembly (Inch), G0516 - LittleMachineShop.com

This kit includes all the parts needed to add a threading dial for cutting inch threads to a G0516 with an inch-based lead screw. Also fits SIEG C6 10x21 lathes and other SIEG M6 Lathe Mill combos. See compatibility tab for reference to machines that are compatible with this part.

Metric Threading Kit 10" 1691 - LittleMachineShop.com

Metric threading kit for 7x10 mini lathes. This kit replaces the lead screw and half nuts so you can more easily cut metric threads. You cannot use a threading dial with this kit installed.

Metal Gear Kit, Mini Lathe Complete - LittleMachineShop.com

Never break a plastic gear again! This metal gear kit contains a variety of metal gears to help change plastic gears on a metal lathe into steel.

HiTorque 9x20 Bench Lathe, LED Mirror Display - littlemachineshop.com

A reversible 2 mm pitch lead screw provide extended threading capability. You can create every American Standard Unified class 2A inch screw thread from 6 to 80 threads per inch, and you can create every American Standard Metric class 6h thread from 0.25 to 4 mm pitch with the change gears that are included.

Using the Three-Wire Method to Measure Threads - LittleMachineShop.com

We are also talking about threads with a small lead angle, so don’t try to use these formulas with double-start threads. Machinery’s Handbook has information on using thread measuring wires on many kinds of threads. Let’s start by saying that it can be a little tricky handling three wires and a micrometer all at the same time.

Mini Lathe Accessories - LittleMachineShop.com

This kit includes all the parts needed to add a thread dial indicator for cutting inch threads to a mini lathe. This dial assembly DOES NOT help you to cut inch threads on a metric lathe with a metric lead screw.