Armeg Sheet Steel Hole Saws

[Paul.M]

How do you go about making a hole in steel trunking that's already fixed in place then? Presumably the punch is quite a stationery tool unlike the drill bit?

A small bit of wood the same width as the trunking is the answer. Bridge the gap at the place you are drilling and this will stop the side of the trunking moving whilst applying pressure with the drill. If the trunking is already in place it must have live cables/wires in it so be careful. Move them out of the way of the forthcoming hole and dont forget that your drilling causes heat which the wires may be near.

 

[PEG]

For the same money as those Armeg yokes,you can get the equivalent Starrett products.

They are missing the ridiculous protrusion around the drive base,the Armeg has.

This means you can cut through holes in multiple sheets,or thicker,softer materials.

Two hair products in the shower? ...not me :jester:

 

[Paul.M]

Not knocking the Staret hole saws, used them for quite a while. Might try the Bosh next, any feed back on them for 20mm-25mm? Used their larger ones for down lights but that is only plaster board.

 

[ipf]

Use the for larger holes but for 20mm just use a cone cutter...good clean cut, no bad burring.

 

[Paul.M]

Use the for larger holes but for 20mm just use a cone cutter...good clean cut, no bad burring.

Dont like cone cutters or it may be the ones I've used in the past were just cheap rubbish.

 

[ipf]

Dont like cone cutters or it may be the ones I've used in the past were just cheap rubbish.

Never used to myself, just got into the 20mm and find it good for sheet steel and pvc.

 

[Paul.M]

IPF, lets see if any are on special offer on Saturday. See you then

 

[Engineer54]

IPF, lets see if any are on special offer on Saturday. See you then

A good stepped cone cutter can be prety pricey, but IMO worth every penny, they can get you out of a lot of problems on sheet steel, plastic and the like!!

 

[Geordie Spark]

I have always stuck to starret for my hole saws though.

I tend to use punches now rather than hole saws. Far neater and no de burring.

Agreed ... Starret holesaws and punches.



I used a LOT of Starret tooling in my Engineering trade days and if it's good enough for Engineers it's good enough for electricians.

 

[Geordie Spark]

Dont like cone cutters or it may be the ones I've used in the past were just cheap rubbish.

Get a good quality one and run at the proper speed and keep it lubricated and it works just fine.

 

[sammyshooter]

Cone cutter the only way for making a 25mm hole out of a 20mm, especially when whatever your drilling is in situe.

Other then that, only starret for me!

 

[Bobster]

The starret hole saws I have (the arbors are old now) can have a 20mm screwed inside a 25mm if you needed to open one up in a pinch. Far better using a cone cutter, I use these step cutters:

BIT,STEP 30,5MM (PKGD) - Greenlee - Made for the Trade? 783310360209

 

[ImpededLoop]

These are great too. You can increase any size to any larger size: http://www.starrett.co.uk/shop/hs_accessories/oopsarbor/

 

[shanky887614]

i have a 32mm cone cutter, perfect for deburing.

what do you guys use for stainless?

i would buy the punches but the people we work with have stixky fingers, im actually sat in van next to the

c u next tuesday atm

 

[gnselectricals]

Been using the superod profit ones there awesome can fit a couple of holesaws onto the drill bit if you've cocked up or need a larger hole etc