Sharpening Handbook

TormekCalc²

TormekCalc² is an Excel spreadsheet that offers exact calculations and many advanced functions related to knife or tool grinding.

Now it contains these sheets:

TormekCalc
It allows to calculate the exact distances of different types of support bars from the grinding wheels or machines housing and thus obtain accurate grinder setting data to get desired angle after sharpening knives or tools. Although the name implies use with Tormek grinders only, TormekCalc2 can be used with any type of grinder.
Main features:

Calculation of the Universal support bar (USB) height adjustment for all their types (Vertical, Horizontal Frontal)
Calculation of the USB distance from the wheel surface
Calculations are performed at the same time for all used grinding wheels
Knife / Tool selection - loading stored Knife / Tool grinding data
Calculations can be made for different machines, machine selection is under grinding wheels
Database selection - loading data from different sheets (Knives or Tools)
Jig selection - loading stored jig specification
Visible height limits for universal supports US-105 and US-430
Knife / Tool info section - shows additional info for selected Knife / Tool

Knives and Tools
It allows storing data about sharpened Knives or Tools including used jig, clamping, grinding procedure etc.

"Picture" column automatically generates jpeg file name + link. To view a picture copy it to subfolder "Knives" or "Tools" with generated name.

BevelCalc (formerly Bevel angle)
Allows reverse calculation of Bevel (ground) angle through "marker method". USB height measurement can be taken from the surface of the grinding wheel or on any type of USB.

Jig selection - loading stored jig specification.
Machine selection - loading stored machine constants.

EdgeCalc [New]
Allows calculation of the height and length of the grinded edge which depends on the edge thickness. Calculations are made for flat (ideal) grind and for grind on a wheel, which allows to show deviations caused by roundness of grinding wheels and compare ideal vs real grind. Stored grinding data can be loaded from database.

Jigs [New]
Allows storing properties of various jigs (even own or from other producers) and consequently using them for the calculations and for quick jigs selection through drop-down list. It includes Projection length correction X+ which is intended for cases where it's imposible accurately measure the projection length (measuring point inside the jig). Correction X+ is then automatically added to the length that was measured at another point on the jig (e.g. SE-77).

Settings [New]
Allows setting default values for all sheets in one place.
Allows specifying dimensional constants for different grinding machines. Defined machine setting can be used for calculation in TormekCalc and BevelCalc sheets and it helps in all situations when grinding on multiple machines. The machine selection allows automatic calculations without the need to manually enter dimensional corrections.
Specification is universal and is not limited to Tormek machines only, it works virtually with any grinder.

FAQ [New]
Just a few answers to Frequently Asked Questions. (Single bevel knives, FVB, etc.)

TormekCalc² has been tested with these versions of : Excel 2010, Excel 2013, Excel 2016 and Excel 365. It is not compatible with Google Sheets and others which don't support Structured references.

You can download it from this link: https://en.webshare.cz/#/file/2v676vVc40/tormekcalc2-onefile-zip. Click on the green box, "Download file".

About this site Remember : The goal of sharpening is to produce sharp tools, and these tools can injure you if mishandled. Safety measures should be followed to protect yourself and those in your shop. Be sure to read and follow all instructions from the manufacturer, and and utilize proper safety equipment. Never consume alcohol or anything that could impair your judgement before sharpening tools, or using sharp tools. Comments can be sent via eMail to me at SharpeningHandbook@Gmail.com.