Just on go on
poe.trade. You can find claws like that easy.
https://www.pathofexile.com/trade/ is actually better nowadays, poe.trade is kind of outdated. The currency-site is so outdated it doesn't even have all currency items as options anymore.
I'll have to disagree there.
poe.trade works fine, so it's just a matter of preference. The currency site is outdated because no one ever really used that. In fact, you get better trades using the main poe.trade site for currency exchange than its currency trading spinoff, but for the most part currency trades are easy enough to obtain just by asking in chat, so the only thing you care about is the exchange rate.
There's a crafting mod that lets you add multiple crafted modifiers. They're not as good as RNG mods but they'll do. Advanced crafting usually adds a random mod while using methods to guarantee that only a single mod or limited pool of mods can be rolled.
Also, see:
https://www.poewiki.net/wiki/Guide:Crafting
noob: how i craft life on my 3L chest senpai
absinthe: throw 2ex at a multi mod and read the wiki, scumbag
He asked. I answered. There
is a reason why a lot of people don't bother though.
The classic easy way to craft something is to just chaos (or alch+scour) the shit out of it until you get good properties. You may want to slap a "cannot roll caster modifers" or similar onto it before hitting chaos tons of times. But it's usually cheaper to just buy a decent rare than keep rolling for it. Most of the advanced crafting stuff is done only for extreme gear or SSF. HC's crafting community is a bit better because the economy isn't flooded with max clear speed builds destroying exchange rates and giant amounts of players putting almost every rare you'd want on the market for cheap.
There
is some basic vendor recipe crafting that is done often enough though, like making perfect roll resistance rings, movement speed magic boots, and weapons that give flat spell damage while leveling.