I've been getting my tool steel from McMaster lately, in small quantities their pricing is the best I've found.
I buy flat bars in O1, I think the smallest length they sell is 16" or so. I get my steel in 36" lengths, so not too heavy. A 1x2x36" bar is fairly easy to handle. They have oversized or precision ground in various popular types of steel. The variety of sizes is vast, I usually can find steel close in size for my projects. My last O1 precision bar was perfectly sized and 3/8" thick turned out to be 3/8" thick, didn't need to use my surface grinder.
The shipping is fast and so far reasonable for the weight. Small orders shipped cheap to me and it's next day delivery in my location. Like four 36" long 5/8" round bars ship for $8, I couldn't drive to my nearest steel seller for that in fuel cost.
I buy flat bars in O1, I think the smallest length they sell is 16" or so. I get my steel in 36" lengths, so not too heavy. A 1x2x36" bar is fairly easy to handle. They have oversized or precision ground in various popular types of steel. The variety of sizes is vast, I usually can find steel close in size for my projects. My last O1 precision bar was perfectly sized and 3/8" thick turned out to be 3/8" thick, didn't need to use my surface grinder.
The shipping is fast and so far reasonable for the weight. Small orders shipped cheap to me and it's next day delivery in my location. Like four 36" long 5/8" round bars ship for $8, I couldn't drive to my nearest steel seller for that in fuel cost.