Pen Turning Calculators
Free pen turning calculators for blank sizing, bushing dimensions, mandrel specs, and lathe speed.
Essential tools for pen turners and woodworkers.
Pen Lathe Speed Calculator
Find the right lathe spindle speed for pen blank diameter and material. Covers wood, acrylic, and metal blanks across the full pen-turning size range.
Pen Turning Barrel Tube Cut Length Calculator
Calculate exact pen kit tube cut lengths from kit specifications. Add the tolerance you want and get a target length for the chop saw setup.
Pen Turning Unit Cost Calculator
Calculate total material cost per hand-turned pen from blank, kit, finish, and supplies. Find your break-even price and minimum retail markup.
Pen Turning Finish Calculator
Calculate total finish needed for a batch of pens. Enter pen count, coats per pen, and finish type to get total volume and recommended container size.
Pen Turning Lathe RPM Calculator
Find the right lathe RPM for pen turning by blank diameter and material. Get safe roughing and finishing speeds for wood, acrylic, and resin pen blanks.
Pen Blanks From a Board Calculator
Estimate how many 3/4 inch pen blanks you can cut from a board. Enter board length, width, thickness, and blank size for total yield.
CA Glue Cure Time Calculator (Pen Turning)
Estimate cyanoacrylate cure time for pen finishing based on temperature, humidity, viscosity, and accelerator use. Includes thin, medium, thick CA.
Pen Blank Size Calculator
Calculate pen blank dimensions from tube length and outer diameter. Returns required length, minimum width, and oversizing guide for common pen kit styles.
Pen Bushing Size Calculator
Find correct pen turning bushing diameter in inches and mm for major kit styles. Returns tube OD, bushing OD per end, and target turning diameter.