One of his recent acquisitions was a wood cutting vertical band saw. I didn't hear the story about where it came from but somehow it was damaged. If you have been following the blog then you know I have a soft spot for machinery repair. Add this onto the fact that Scott is a cool cat and fellow metalworker and you have the makings of a good project.
Looking at the part it appears the saw was tipped over and fell on the band wheel side of the machine. The part that he brought over is the bracket that does the upper wheel tensioning and blade tracking. Obviously this is a pretty important part. Scott was thinking it would be an easy welding job for TIG so he gave it to my wife to see if it could be welded. My wife is an extremely talented welder and immediately noticed it wasn't aluminum but non other than the dreaded pot metal.
Most welders have a couple of stories in their inventory about trying to weld pot metal. Nobody can really tell you what it is other than pot metal 101. The alloy contains all the most difficult to join materials all rolled into one alloy. Zincalumagleadalloy would be as accurate a description as pot metal as any. It is the scourge of the welding community. To a person it is hated everywhere.
oxtoolco YouTube channel in a couple of days to see live action.
The first step was to take some measurements of the original part and make a shop sketch. I find this light marinating helps me form the plan of attack for the work sequence as I measure and examine a piece like this.
I decided to do the .940 bosses first. I made a quick holding spud to fit the large hole in the part accurately. This spud will be used to turn the bosses on either side of the part.
The next operation was to cut the small round bosses on the end of the part. I decided to do this in the four jaw chuck. I suppose I could have done it in the mill but I was in the mood for lathe work.
Thanks for looking.