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posted this in bandsaw section but maybe that limited my options
want to cut slices of 100mm pvc pipe at 30* angles.
drop saw is too small diameter so figured the band saw but how to cut on angles...please dont say tilt the table...
but what other options.
basically 100mm diameter, 20mm wide at top and cut on 70* angle so its about 30/35mm wide at the base but the angle is important.
Make up a mitre box concept but instead of vertical grooves, make it at the required angle and cut the pvc with a hacksaw.
I like your thinking....
Make up a V-block to hold the pipe.
A piece of Gaffa tape will stop the pipe rotating.
Then use a miter gauge in a miter slot to guide the V-block past the blade.
If your band saw doesn't have a miter slot clamp two battens to the table and use a square sled between the battens to guide the V-Block at the appropriate angle
I agree use your bandsaw if possible you won't get an easier way of cutting PVC .
Reciprocating saw with a 10pti wood blade.
Angle grinder with a thin blade or a compound mitre saw with a metal blade?
It depends on how accurate a cut you desire. The issue with both a reciprocating saw and an angle grinder is you have to cut one side of the PVC pipe at a time which means cutting to a line which means setting up a line that is coplanar across the pipe. With some care this is possible but even if you can draw an accurate line then I found it's too easy to wander off the line when cutting. when I used these methods I cut just shy of the line and then used 150mm belt sander to sand the excess off.
The better methods involve using a long blade that cuts both sides of the duct at the same time which is what a bandsaw, hacksaw, or even a hand held panel saw can do. A mitre box and a hand held panel saw is how I cut long pieces off 6m long ducting as BS gullets are limited in cutting depth. The panel saw I like to use is a 6TPI. On the BS I just use a mitre slide and is how I cut all the 140mm long pieces for the BMHs I make.
The long blades in a RC work fine for angle cuts. Anything less than 10tpi and you run the risk of cracking thin walled stormwater pipe. Practice makes perfect.
I agree , especially about the practice.Quote:
Originally Posted by rustynail
Minor point, but if its 100 mm it's unlikely to be stormwater. 100 mm PVC is DWV, stormwater is usually 90mm.
whatever it is its 100mm and :):wink: I been playing with a mates sliding compound saw, Oh the joy the exuberance to see nice clean cuts, adjust the angle slightly and wahoooo happy chappy.
thanks for all the advice.