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 UK

HSS Step Drill Bits – Titanium Coated | Individual Sizes & Sets Available. HSS Drills. Titanium Coated HSS – Reduced heat, smoother drilling, longer tool life. 19PC PIECE TITANIUM/TIN HSS DRILL BIT SET 1MM - 10MM - EXCELLENT QUALITY£12.50.

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 UK

HSS Step Drill Bits – Titanium Coated | Individual Sizes & Sets Available. HSS Drills. Titanium Coated HSS – Reduced heat, smoother drilling, longer tool life. 19PC PIECE TITANIUM/TIN HSS DRILL BIT SET 1MM - 10MM - EXCELLENT QUALITY£12.50.

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