Is there a tool that will......

[fisherman]

Use a flat blade bit with extension, about 300mm long, with a hex grub screw to hold the bit.

 

[Bosun Higgs]

I need to cut an 8mm hole through about 1.5 inches of oak.

Trouble is, the hole needs to be right in the corner of a right angle between two pieces of oak, and parallel to one of the surfaces, so there's no room for a chuck or the body of a drill.

Thanks for any ideas.

Buy an 8mm twist drill and a suitable length of 8mm bar. Get you local engineer to trim the end of the drill and but weld the to together. Drill as normal but , if you can manage it, with some sort of temporary guide fixed to the top of the surface to are parallelling.

 

[Appleyard]

"It's a bit larger than a mouse sh!t"

59 Minutes....you are getting slow,guys




(and smaller than a cat sh!t)

 

[gianenrico]

I need to cut an 8mm hole through about 1.5 inches of oak.

Trouble is, the hole needs to be right in the corner of a right angle between two pieces of oak, and parallel to one of the surfaces, so there's no room for a chuck or the body of a drill.

Thanks for any ideas.

Well, if the surfaces aren't too "deep", how about a masonry widia-reinforced long drill? To drill holes in and through walls they came in many lenghts up to 30 cm. (more or less 12").
The point of the drill usually has a hard metal insert that sticks out half-a-millimeter or so, and in your case it would allow for a hole exactly in contact with the surfaces in the corner but would't stain the surfaces' surface (did I understand myself?

 

[gianenrico]

I need to cut an 8mm hole through about 1.5 inches of oak.

Trouble is, the hole needs to be right in the corner of a right angle between two pieces of oak, and parallel to one of the surfaces, so there's no room for a chuck or the body of a drill.

Thanks for any ideas.

This comes in 540mm lenght:
http://www.ferramentaonline.com/shop/advanced/Punta_Booster_SDS-max___vedi_misura-ska062166018.html