I may not know much about 3D printing, but I use torque wrenches at work (installing Solar PV panels). If you are using one, don’t be in a rush. tighten slowly and steadily and feel for the “click”
Harbor Freight currently has their Pittsburg 1/4" Drive Torque Wrench on sale for $21.99. I have one of these. It’s definitely more cheaply constructed than a good snap-on tool, but it arrived in very good calibration, and has maintained it well (I’ve checked it against my digital torque adapter). It also has a lifetime warranty. I own one. I normally avoid Harbor Freight tools (especially precision tools), but I figured for the price, it didn’t matter much if it did not hold up very well. I did find that two of the crews holding the head together were backing out in use. when I went to tighten it, it turned out they were stripped. I emailed Harbor Freight and a new one arrived at my door a few days later, no questions asked, and they did not ask me to send the old one back.
A couple of tips:
(1) The proper procedure when using a torque wrench is to slowly and steadily turn the wrench till you feel the “click”, then relax or back off on the wrench so it “unclicks”, then slowly turn until you feel the click again.
(2) At the very low end of the tools range, the “click” when you hit the torque setting can be very subtle. Sometimes it’s easier to go by watching/feeling for the wrench head to move than it is to hear/feel the actual “click”.
(3) When storing your torque wrench, back it off to the lowest setting on the wrench. This takes tension off the spring that senses the torque, so it doesn’t take a set and go off-calibration.
(4) If you drop the wrench, or otherwise give it a good slam, there is a good chance you’d knocked it out of calibration. I’ve dropped mine from shoulder height onto a hard floor and still had it read OK, but if it happens, I check it against a known wrench before using it on a critical component.