How to Weld Bandsaw Blades

[Music] welcome to MSC machinery this is Larry the machinery guy today what we're gonna cover is blade welding why there is there a blade welder on the machine the process that we're going to follow the welder blade and also why you would want to have it there so imagine if you had a 12 inch block of material and you want to cut a six inch circle out of that 12 inch block there's a number of ways to do it but the most effective way to do it is on the bandsaw so what we would do first is identify the center of that hole drill a hole through the center of that bead the blade through there weld the blade cut it out break the blade and then we have a nice six inch hole in there a very big time-saving device and that's why that blade welders on the machine so if you give me a second or two we're just going to go over here and we're gonna show you the process of how to weld that blade first thing we're going to do is I took a small section of blade I don't want to use a whole piece just as for this demonstration a key thing to remember it also is these are designed for carbon steel blades and not by metal blades so here we go we're just gonna cut the blade off theoretical point hopefully between it two pieces this is a critical portion right here and people will often forget that is to degrease the blade you ever try to weld something and you have a lot of grease on there you get a bubbly weld the same thing applies for welding a blade so I have a little degreaser over here I'm gonna spritz that wipe the grease off so I get a nice clean weld next thing I'm going to do is look at the blade make sure I have the tooth configuration correct where I want it I'm gonna do a mirror image when I grind it so if I am a little off square when I grind the blade for a nice clean edge it's going to match up when I flip it around [Music] and I'm just squaring that up make sure I have a nice clean edge on both sides I'm gonna put the blade in the blade welder lock it in place set my pressure and what that does is this is called the butt weld welding to like materials together without any filler I'm melting that material very rapidly and welding it together you're going to see a little sparks here hopefully I won't spontaneously combust and we'll be okay so then we'll examine that blade for weld we have well gone both sides which is great but we're not done yet the blade is very very strong at the weld now if I go to flex that because I have to go around that wheel though the bandsaw it's going to break so we have a process called annealing where we're going to sacrifice some of that strength for flexibility it's called an annealing process what you do is you put it out here the second level and you'll see that blade get a little cherry red and I'll gradually decrease the heat taking some of that strength away and making it a little softer and before you go any further what you want to do is you want to flex that blade make sure that's not gonna break when you put it on there so I'm pretty satisfied with that and the final process is you're gonna grind that away you're gonna grind that weld away cuz that wealth has to fit through the guides the guides are right here and if you've ever done any blade welding and you hear at the thunk the thoughts the thunk that's that weld is not correctly ground we're gonna grind that away then the final thing is you want to make sure this edge is also square so so there you have a welded blade ready to go to be put on a bandsaw flexible enough to go around the orc of that I'm pretty happy with that thank you for watching the msg video we're built to make you better have a great day [Music] you you

Channel: MSC Industrial Supply Co.

Views: 11,869

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Id: xuFpZTUjtmg

Length: 5min 7sec (307 seconds)

Published: Fri Dec 21 2018