I spent 30 years in the custom home building industry where having the right equipment can often mean either getting a job done RIGHT, or not even getting the job at all.
Sometimes you've just got to bite the bullet and cough up the dough and get the right tool.
If it TRULY is the right tool, it will PAY FOR ITSELF.
Here's my opinion on that "$1500.00 belt sander":
If you TRULY, TRULY want to make knives, the REAL knife sander is the only way to go.
11 years ago, I went to the bank and borrowed 2Gs for my Bader BIII. I was working a full time job which covered all of my personal expenses. I let my knife proceeds pay for the BIII and had it paid off in the first year.
I'm still using the BIII on a daily basis, and it is the BACKBONE of Andersen Forge.
With the proper equipment, you will be LEAPS AND BOUNDS ahead of where you would be without it in very little time.
But, that's me.