To solder the blades, you will need silver solder and flux. “You will need to know the finished length of blade that works on your saw. To get the measurement either check the owners manual or take a used blade and cut it to measure. I add 1/8” to the total length to allow for the solder joint. Let the blade cool in the fixture and grind the face of the blade smooth.
Be/mqhsZl cseA. I know many of the bandsaw blades appear to be spot welded together and I don’t happen to own a spot welder by I have read of people who have solder the ends together with good results, so that is what I am going to try. From what I learned, the best way of getting the 2 ends together is with a “Lap” joint, which is where the 2 halves of the blade overlap, but instead of being square, I will need to grind the matching ends of the bandsaw blade in a bevel shape to help reduce the bulk that would happen when you overlap a could of bandsaw blades. I fired up my propane torch smeared an abundance of flux on the aligned bandsaw blades and just ran the flame through the joint until I could get the solder to melt at which time it flowed nicely between the 2 parts of the blade.
With larger blade and with blades where a strong joint is needed you will braze. Too much heat, taking too long to get silver braze to melt will cause flux to get used up dissolving oxides and go black and no longer work and also more time for blade to expand and the overlap joint to slip over it self getting a thicker joint with possible thin spots on both sides after grinding back. File or grind the blob of solder off flush with the surface of the blade and flat off the blade edges to allow smooth running of the blade through the saw guides.
Sounds like freebie blades to me – silver solder as above – don’t keep the heat too local and let them cool slowly ………….sorta ”warming them down with the torch” – if you get my drift. 07-31-2016, 05:00 PM #13 cut the blade at a 30 degree angle and bevel the edge and you get about 4 times the blade cross section for silver solder to adhere to. For doing several blades at one time I think silver brazing is faster.
how to solder bandsaw blades Related Question:
Can you fix a bent bandsaw blade?
How to straighten a bandsaw blade? It is risky but if it’s absolutely necessary, a temporary fix to straighten a bandsaw blade can be done by placing it on an anvil and gently tapping it flat with a nylon head hammer/mallet or using a pair of gas pliers to straighten out the blade.
Can you arc weld a bandsaw blade?
Luckily for you, though – a broken bandsaw blade doesn’t have to be the end of your work. What is this? You can simply weld the bandsaw blade back into shape. Through this article, we’ll explain exactly how you can do that, as well as the importance of doing so when necessary.
What is a blade welder?
The T27555 Blade Welder can cut, weld, anneal, and grind bandsaw blades. This allows you to make new blades from bulk coils of band stock. Quickly rejoin a blade that has been purposely cut for making an internal contour cut. Repair broken blades that are still sharp and useful.
What is brazing filler rod made of?
The “welding” of cast iron is usually a brazing operation, with a filler rod made chiefly of nickel being used although true welding with cast iron rods is also available.
What do you do with old bandsaw blades?
There is life for those old, broken, and dull bandsaw blades. Just cut the old blade into sections about 12″ long. Stack the pieces together, alternating the teeth so that they don’t touch their neighbors. Use either same tape, or just braze the ends together,.
Does welding melt metal?
Joining Metals As opposed to brazing and soldering, which do not melt the base metal, welding is a high heat process which melts the base material. Typically with the addition of a filler material.
How do you anneal a bandsaw blade?
To anneal, I always shade the weld with my hands to keep the weld darkeded from the ambient light. Gradually heat the weld by pumping the anneal button untill the weld turns cherry red (not orange or yellow) then slowly cool the weld. Remove and test the weld buy bending the blade to a 8″ or 10″ radius.
Should bandsaw blade twist?
Typical bandsaw blades can be flipped “inside out” to make the teeth point the other direction. On some knife edge style blades and grit edge blades you can get a fresh sharp cutting edge from a blade this way, just by flipping it inside out.