Making a Toolpost Grinder Part 1: Introduction

Introducing the Toolpost Grinder build series.
In part 1, we look at the design of the toolpost grinder that we'll be building here in the shop. We look at the off-the-shelf collet holder that forms the core of the spindle as well as the bearings, springs, motor and belts. Then we open up Fusion 360 and look at the design in detail and talk about various design choices and the reasons for them.
If you're interested in following along, here are some links to find some of the parts we're using:
*This site contains affiliate links for which I may be compensated
C20-ER20A-150L Collet Holder (Amazon*): amzn.to/3ks3wCM
6804-2RS Deep Groove Ball Bearings (Amazon*): amzn.to/3vpE1bP
Belleville Disc Springs (McMaster-Carr): goo.gl/rQZXJm
140J2 Poly V-Belt (VBeltSupply): goo.gl/CCkP4Y