what brand holesaws?

[shanky887614]

Bloke I know used an impact driver and they were quicker but didn't last very long!!!

thats the reason i dont want to take a set of them to work, as soon as my back is turned they will a drill/impact driver with it

 

[Maddison]

nice and slow wins the.race.. get some Inox on. there

 

[stitch]

Dont know what happened here.

 

[stitch]

Same as edexlab here. The smallest one that I have is 14mm, which I use for punching holes in Legrand Salamadre Trunking Lid for the turnbuckles and the largest is 50mm which I have used for punching holes in Eaton gland plates.

 

[Robotstar5]

I'll stick with my Starret cutters, some are many years old and still going strong. As above, the correct speed and lubricant, I use Rocol and they last well.

 

[Guest111]

About 2 years ago I actually wrote an article for Starret on their holesaws,we were trying some made by a competitor and they were terrible,in the end we used a well worn 20mm Starret with engine oil as a lubricant and did 4 holes in 3/4 wrought iron no problem.The key points are speed lubrication and pressure,too much pressure or speed and too little lubricant will kill any holesaw,I regularly used to drill holes in 10mm steel no problem,in fact most of my holesaws have lasted ages.

 

[rmc86uk]

I like Qmax stuff because it gives a real nice cut with no rough edges. What I don't understand is that you have to drill a 10mm hole in the first place to use them!

 

[davesparks]

I like Qmax stuff because it gives a real nice cut with no rough edges. What I don't understand is that you have to drill a 10mm hole in the first place to use them!

What is there not to understand?
The bolt has to go through the material to connect the punch to the die, it can't pass through the material without there being a hole in it!

 

[shanky887614]

What is there not to understand?
The bolt has to go through the material to connect the punch to the die, it can't pass through the material without there being a hole in it!

i think what he means is why is it a 10mm and not an 8mm for arguments sake

 

[davesparks]

Shouldn't take too much mental exertion to answer that one either!

Manufacturers will always aim for the highest profit margin possible, so will use the smallest bolt possible in the hole punch. So then we can assume that an 8mm bolt has been tried and probably stripped the thread or deformed etc

 

[rmc86uk]

I know how they work but if you want a 20mm hole why drill a 10mm hole to then use Qmax to make a 20mm hole when you could use a 20mm cutter to begin with.

 

[shanky887614]

I know how they work but if you want a 20mm hole why drill a 10mm hole to then use Qmax to make a 20mm hole when you could use a 20mm cutter to begin with.

because in stainless steel etc it will take a while with a holesaw

 

[Andy78]

I know how they work but if you want a 20mm hole why drill a 10mm hole to then use Qmax to make a 20mm hole when you could use a 20mm cutter to begin with.

You said it yourself in post 37..... a nice neat cut with no rough edges. No filing and less swarf.

 

[edexlab]

You said it yourself in post 37..... a nice neat cut with no rough edges. No filing and less swarf.

Plus you get the correct diameter hole, with a holesaw they tend to wander a little or a lot depending on your technique and end up with a sloppy fit for the gland/ bush I've seen people do it and end up with a hole 3,4 mm bigger in diameter than the gland leaving a visible gap around the locknut, this is made worse by the varying sizes of different manufacturers

(Just waiting for the sloppy fit for the bush comments now! )

 

[shanky887614]

Plus you get the correct diameter hole, with a holesaw they tend to wander a little or a lot depending on your technique and end up with a sloppy fit for the gland/ bush I've seen people do it and end up with a hole 3,4 mm bigger in diameter than the gland leaving a visible gap around the locknut, this is made worse by the varying sizes of different manufacturers

(Just waiting for the sloppy fit for the bush comments now! )

some like it loose, i always find a bit of liquid rubber fills the hole nicely XD

some holesaws do seem to wobble quite a bit on there arbour