It's been about 10 years since I left Caterpillar --- but I don't think you can weld (reliably) on PM / sintered parts. This was one of the concerns the crotche

It's been about 10 years since I left Caterpillar --- but I don't think you can weld (reliably) on PM / sintered parts. This was one of the concerns the crotchety old manufacturing engineers brought up when I proposed replacing some expensive machined bosses with a much cheaper PM part. Then again, those guys really loved to say stuff like "no, that's not how it's done." - so maybe they're wrong / tech has improved significantly.