The beginning of a thing. Its going to be a very cool thing. I hope. 
Discussion
What kind of wood ya got there? My turntable plinth is a fatty slab of western juniper. It was fun to polish it, but sanding by hand was a mistake. 2 years of tennis elbow was torturous. You're smart using power tools!
It's walnut. It's got a few knots and some nice grain. It's cleaning up nicely. Juniper can be really pretty, especially the twisty pieces.
I'm not very skilled with power tools but I'm also not very skilled at woodwork, so they're helpful in that respect.
Now, it's a shiny thing. I like doing resin pours. I wouldn't mind getting good at this.

Looks fantastic!
Thanks! The picture is forgiving. It's actually quite uneven. It was 45°f outside when I was pouring, so it was like smearing bubblegum. I'll have to set up something indoors for making these messes, if I'm going to continue. Until then, my gift recipients have become immune to my yolo diy gifts so, its okay 😂
Read the ingredient list on your pourable resin and lemme know how you can safely do it indoors!
My juniper slab got sparkly gold epoxy filled in the cracks (to simulate kintsugi), with brushed-on polyurethane coats (not poured epoxy) to seal, and now it's the plinth of my turntable. It was lots of fun to DIY it myself. Yours looks great, too! Well done!

That's beautiful! I hope my stuff will look half that nice one day 💜