retneprac

Well-Known Member

• Jul 16, 2018

• #1

Hi All

Not being a metal worker, can anyone advise on a suitable milling bit/gadget that would allow me to drill a hole and mill flat the immediate area around the hole so a bolt head can sit flat on the plate and not on the bars?

If it fits in a cordless drill even better.

Cheers.

 

retneprac

Well-Known Member

• Jul 16, 2018

• #2

kind of like a mix of a stepdrill and fostner bit for metal!

 

H

Hicap phill

Well-Known Member

• Jul 16, 2018

• #3

Use counter sunk bolts?
Allen keys to do up they are black or silver.
6mm bolt hole & 8or10 drill just to sink the head

 

retneprac

Well-Known Member

• Jul 16, 2018

• #4

Cheers.

Done that on the back, now need to do the bar side for a washer and nut.

 

Kwakerman

Well-Known Member

• Jul 16, 2018

• #5

retneprac said:

Hi All

Not being a metal worker, can anyone advise on a suitable milling bit/gadget that would allow me to drill a hole and mill flat the immediate area around the hole so a bolt head can sit flat on the plate and not on the bars?

If it fits in a cordless drill even better.

Cheers.

Click to expand...

A spotface cutter is the correct tool for the job, however a counterbore will also do the same job with a bit of care. Basically counterbores come with a small pilot which keeps the cutter central

 

Kwakerman

Well-Known Member

• Jul 16, 2018

• #6

Like this, just pick the size you need to suit the screws

 

retneprac

Well-Known Member

• Jul 16, 2018

• #7

counterbore end miller, perfect, cheers.