Hello, I'm creating a sculptural piece with 3-6mm wire but have struggled to maintain good strength in my welds.That is, when I put some pressure or tension on two parts joined together the weld snaps in two like a biscuit. I'm using gassless 0.8mm flux with an Australian made Unimig 185(https://unimig.com.au/product/viper-185-mig-tig-stick-welder/). Also setting the machine at the suggested wire feed speed and voltage. I'm also certain that my polarity is set correctly. Are there any specific tips ...techniques...etc I should be using????? Any advice will be greatly appreciated. Thanks !!