This was a little scary but fun. Nice to make something like this yourself..

I used a flapper wheel disc for this like the one here:

WORKPRO 20-Pack Flap Discs, 4-1/2-inch, Arbor Size 7/8-inch, T29 Zirconia Abrasive Grinding Wheel and Flap Sanding Disc, Includes 40/60/80/120 Grits

https://amzn.to/30Br1yV

Here’s one that should work just as well but is cheaper:

https://amzn.to/2uUOq2p


DeWalt Grinder available here:

Least Expensive:

https://amzn.to/2TpV4YJ

More Expensive:

https://amzn.to/2uUFFW5

Battery Powered:

https://amzn.to/2tepGSn

Paddle Switch:

https://amzn.to/38b3BTj

Cutting Wheels:

https://amzn.to/35Xxo0g

20 pack:

https://amzn.to/37a23cp

General Purpose Grinding Wheel:

https://amzn.to/360cAW6

Cup Brush Attachment:

https://amzn.to/3afI2mx

Wire Wheel:

https://amzn.to/3707udM