Nah, left-handed masons don't need a special trowel-hear me out! I've worked with three lefty guys over the years, and none of 'em used "left-handed" trowels. The thing is, trowels are pretty simple tools-blade and handle, no weird parts that only work one way. But here's the catch: lefties might wanna tweak a couple things to make it feel right.
First, the handle. Most trowel handles are shaped pretty neutral, but if you're left-handed, you might wanna sand down a little edge here or there so it sits better in your palm-like how righties adjust a pen grip.
Then there's the blade: when you're spreading mortar, a lefty'll hold the trowel at a slight angle to the left instead of right, but the blade itself don't care. I had a lefty buddy once who swore by flipping the trowel so the blade curved toward his thumb-said it felt like the tool was "listening" to him.
Only time a special trowel might help is if you're a total newbie lefty. Some brands make "ambidextrous" ones with symmetric handles, but honestly? Most lefties just grab a regular trowel and break it in to their hand. It's like using a pair of scissors-lefty scissors exist, but plenty of lefties just use regular ones fine. So no, you don't need special, but tweak it till it feels comfy. That's the key.
