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madkayaker
Pro sparkey Pro Welder
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for the price a bandsaw would be cheeper! and you can drink tea while it does the work
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madkayaker
Pro sparkey Pro Welder
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they will cut square if set up right
carl0s
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This type of tube cutter? Could I reliably use it to cut ebay-purchased stainless mandrel bends?
The tool above works quite well on smaller diameters but with leave the bore turned in slightly, so it will need dressing back with a file. The larger diameter and thinner the wall gets the less well they work, the wall of the tube distorts as it is being cut so the tool wanders off line. I have one for cutting very large diameter tube but it's hopeless unless the wall is at least 3 mm. This is a particular issue if the cut is being made near an open end instead of mid length.
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carl0s
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Thanks. For the price, I will probably buy one of those to try out anyway, but I will most likely buy some sort of chop saw and just try to practice being square with my cuts. Maybe.
carl0s
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That sounds similar to the "abrasive" chop saws / metal cut off saws that I have seen. They appear to use a thin grinding disc type cutter. Do you think one of those would be a worthwhile purchase then?
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Only way to get perfect straight cuts is an orbital tube cutter, excellent kit, but expensive. Not a diy tool! Neat little video of how it works here
The jig, i have a very simple little jig in me tool box for cutting 48mm handrail tubes, its a bit of heavy wall 60mm pipe, little locking screw in it. One end is cut square other is at 45, just slip it over the tube, do the thumbscrew up, and scribe round it, or run the grinder round it.
The jig, i have a very simple little jig in me tool box for cutting 48mm handrail tubes, its a bit of heavy wall 60mm pipe, little locking screw in it. One end is cut square other is at 45, just slip it over the tube, do the thumbscrew up, and scribe round it, or run the grinder round it.
carl0s
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Hmmm, yes they are expensive.
I want to put together a 2.5" stainless exhaust mid-section (x2, on my v8 motor). So I want to cut pre-bought bends and weld them together.
use a jubilee clip to scribe the cut area, then use a 9 inch profile disc sander to square up
use the type with a tilt flat bed to rest the work on set up with a set square,
and clamp a piece of angle to the bed square with the sanding face ,and your set up for the whole job,,
you can profile bits of round steel ie 4-5mm to the bends /in curve/ out curve and clamp with jubilee clips to hold in place while you weld, should be able to pick up a sander cheep from the bay or like,,
use the type with a tilt flat bed to rest the work on set up with a set square,
and clamp a piece of angle to the bed square with the sanding face ,and your set up for the whole job,,
you can profile bits of round steel ie 4-5mm to the bends /in curve/ out curve and clamp with jubilee clips to hold in place while you weld, should be able to pick up a sander cheep from the bay or like,,
I normally find that the easiest way to cut thin walled stainless bends is to mark them with a pen and cut them with a 4.5" angle grinder and thin slitting disc.
One way to do it (if you know the angle you want), is to measure the outside of the bend (just the 90 degree curved bit) divide that number by 90 then multiply the result by the angle you want. Measure that distance on the outside curve, mark it, then do the same with the inside curve of the bend, mark that, then join the 2 marks with a pen line by wrapping a bit of thin cardboard, vinyl, tape measure (or other suitable material)around half of it, then turn over and mark the other half.
Paul G
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My ickle baby band saw, though much maligned by others, not only cuts tube
nice and square but also cuts up pre-formed bends to whatever angle I
require as well. (with minor mods and proper set up)
So, ner ner nan ner ner.
Cheers,
Paul G
p.s.
I do find that bi-metal blades are a necessity for stainless.
nice and square but also cuts up pre-formed bends to whatever angle I
require as well. (with minor mods and proper set up)
So, ner ner nan ner ner.
Cheers,
Paul G
p.s.
I do find that bi-metal blades are a necessity for stainless.
Pete.
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That's the tube cutter we have at work. Very quick, perfectly square but you have to slow it down a lot on stainless or perhaps find a better cutting wheel, as I tried it on ours and got all the teeth glowing
Hmmm, that tool is like the posh expensive version of a jubilee clip
Just put the clip on the tube, and use a senior hacksaw, the blade skids on the clip using it as a guide and makes a square neat cut. Great for cutting frame tubes square and odd shaped tube and other stuff.
Just put the clip on the tube, and use a senior hacksaw, the blade skids on the clip using it as a guide and makes a square neat cut. Great for cutting frame tubes square and odd shaped tube and other stuff.
