chester dylan
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- chester uk
dose anyone no where i might find some 100mm steel tube thats realy hard im thinking about making a very long series hole saw for wood
i was planing on roughing it out with a cutting disk and then making some sort of addapter to get it on my cutter grinder (clarkson)
the outher idear would be to braze or silver solder some tungston carbide tips on the teeth but that seems like its destend to fail.
the problem i have always found with hole saws and wood is clearing the shavings/saw dust
Core drill will be better, low speed and massive amounts of tourquei was thinking along the line of air to remove the saw dust grinding flutes is a grate idear.
as for powering it its eather a big core drill or moding a piller drill for the job
why not use some bog standard mild steel tube and braze some profiled silver steel or similar to the end to make the cutting edge? if you used a thick ish piece of hard material for the cutting edge and a thinner wall tube, you could grind grooves/flutes into the wall of the hard cutting material to allow removal of sawdust...could work if designed properly, maybe with the addition of compressed air to blow the sawdust out if it starts to build up...
i think the hardest part here would be the torque required to cut it and the fact that oak doesnt like being cut very much
That's actually quite a good idea, hats off to you BB