It sounds to me that funds are a significant factor, just as it always has been for me. HUGE reason I taught myself to BUILD things! For those that have a bit more $$ or those who do knifemaking for a living, it is often times very easy for them to say just buy this or that...., and of course use the age old phrase, “buy once cry once”! Well, that does hold true for some things, but simply is not an end all! At no point would I have ever been able to spend even $1000 on a grinder! If I had tried to “save” for it, I’d still be saving! Just would never happen is what I mean.
I started my grinding with a Dayton 2x48 grinder, which I got for $300. I quickly turned it into a 2x72 for the price of an aluminum arm and 4” contact wheel. And that was what I used until last year, when I finally built my full scale 2x72 w/vfd. Was also able to still sell the Dayton for $270. Building a 2x72 is like building an AR15....you can build one which will work as well as the most expensive machine sold! And you will spend at times a FRACTION of what the more expensive units sell for. As for a VFD, well I’m a fan of the better known chinesium units sold. I will never spend $400 on a VFD. If you can, go for it! But AS FOR ME, that is money I would rather see in other places.
All that said, I also still have a 1x30 that I converted to 1x42, vertical/horizontal. I’ve always used ceramic belts with it. I’ve never heard of the ceramic 1x30 belts being for wood?? The 1x30 Norton Blaze ceramic belts are IDENTICAL to the 2x48 Blaze belts & 2x72 Blaze belts I have always purchased. In reality, the reason the 1x30 belts are used up so quickly, is because they have approx. 5 times LESS surface area than a 2x72 belt. It’s very simple. Has nothing to do with them being made for wood. Because they aren’t.
And I’ll second what C Craft said. Doesn’t matter how much you spend. You will simply get better as you continue making knives. Same as anything else.