Welding Equipment When it comes to a superior weld for all of your automotive weld needs, Autotech Collision has everything necessary to perform even the toughest welds. Our Car-O-liner® CTR12000 Spot Welder will outperform many other welders on the market today and MIG welding needs have never been easier for brazing and aluminum repairs with our Car-O-Liner® 273i. We also perform plastic welds in-house with our USC Nitrogen Plastic Welder for your bumpers if necessary.