Cone bit

[Jupiter01]

I am after a cone bit for use on plastic and metal boxes, etc. and would welcome any recommendations please.
Thanks in advance

 

[footprints]

I use a step drill myself I think I got my set from Tolstation just a cheap Silverline set has lasted pretty well mostly for plastics (lots of holes in plastic planters for the Mrs in the garden) a fair bit of aluminium and the odd steel cut.

 

[ericmark]

Mine came from Lidi, or Aldi, it has done well for me.

 

[Jupiter01]

Something like this?

Large Titanium Bit HSS Steel Step Cone Drill Hole Cutter Tools Set 4-12/20/32mm | eBay

Material: HSS Steel. With the Titanium coated to reduce friction and heat. Finish: Titanium. Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic,copper, fibreglass and PVC etc.

www.ebay.co.uk

or this set:

HSS STEP DRILL BITS TITANIUM/TIN COATED 3-12 / 4-12 /4-20 / 4-32 AND 3PC SETS | eBay

DRILL SETS HSS DRILLS MASONRY SDS WOOD CORE DRILLS HOLE SAWS SCREWDRIVER INSERT BITS JIGSAW BLADES CUTTING GRINDING DISCS. All our drill bits are manufactured to British Standards ISO and DIN. HSS DRILLS.

www.ebay.co.uk

 

[footprints]

Something like this?

Large Titanium Bit HSS Steel Step Cone Drill Hole Cutter Tools Set 4-12/20/32mm | eBay

Material: HSS Steel. With the Titanium coated to reduce friction and heat. Finish: Titanium. Ideal for using to cut holes in a variety of materials including steel, brass, wood, plastic,copper, fibreglass and PVC etc.

www.ebay.co.uk

or this set:

HSS STEP DRILL BITS TITANIUM/TIN COATED 3-12 / 4-12 /4-20 / 4-32 AND 3PC SETS | eBay

DRILL SETS HSS DRILLS MASONRY SDS WOOD CORE DRILLS HOLE SAWS SCREWDRIVER INSERT BITS JIGSAW BLADES CUTTING GRINDING DISCS. All our drill bits are manufactured to British Standards ISO and DIN. HSS DRILLS.

www.ebay.co.uk

Yes that's it is, a set is better than just one.

 

[Jupiter01]

Will go for the set that comes in the pouch