carbide forstner bits

[marcros]

I need to drill a few 35mm flat bottomed holes about 6-10mm into some pretty hard phenolic plastic, on my lathe. i have seen suggestions of using a carbide tipped forester bit but they seem to be unavailable in the uk.

I only have a few to drill so I cannot justify a premium brand. Any suggestions on where may have them?

would a 35mm router cutter be better, it I could rig up some way of holding the item in a jig on the woodcut.

The lathe is easier to hold the item in if possible for drilling.

 

[NazNomad]

http://www.amazon.co.uk/Bosch-260925528 ... B004WO6GEO

 

[marcros]

thanks. i never think to look on Amazon for these things.

 

[Rhossydd]

Bare in mind that those won't drill a completely flat bottomed hole. They still have a spur in the centre and the edge cutters will leave a recessed ring on the outside.

 

[galleywood]

Look here.

http://www.axminster.co.uk/axcaliber-lo ... s-ax867825

I think the offer is for one week only.

 

[marcros]

Bare in mind that those won't drill a completely flat bottomed hole. They still have a spur in the centre and the edge cutters will leave a recessed ring on the outside.

the spur i can live with- they are to drill for a clock insert, so will be covered.

What do you mean about the recessed wing on the outside- is this at the bottom of the hole? If so, that wont matter.

 

[marcros]

Look here.

http://www.axminster.co.uk/axcaliber-lo ... s-ax867825

I think the offer is for one week only.

Thanks. I want to test the idea out and see what the result looks like. a tenner I will gamble on, but £28 is a bit much at this stage, just in case I dont like the result.

 

[Phil Pascoe]

The "wings" and the tip will leave marks only on the bottom of the hole - they're a standard bit for blind holes for hinges in kitchen furniture.

 

[marcros]

ah, thanks. should be fine for my purpose