Drilling Holes To Attach Flue Elbow To Woodburner

[pollys1dad]

Hi,
Can anyone tell me the easiest way to drill a hole to accept self tapping screws to join
the flue pipe to the back of my woodburner?
See screenshots here http://s807.photobucket.com/user/EarthT ... 0Machinist
A, is the fitment on the back of the burner it can be removed by simple rotating and disengaging the lugs.
Is about 1/8" thick.
Photo B is the elbow attached to the stainless steel double walled flue liner.
The elbow will nicely fit into the back of the burner as shown in photo C.
I need to drill several self tapping holes to join the 2 together and then seal any gaps with woodburner sealant.
Best way to do this, type of drill bit, how to drill?
I have two hand drills one 810W the other 280W
Help appreciated,
Thanks.

[redneckalbertan]

Put self tapper in driver bit, place where you want it and pull the trigger!
The ones that I use have a 1/4" hex head about 1/4" to 3/8" long and look like the picture below.

[pollys1dad]

I've never heard of a driver bit, I Googled driver bit but several different things came up.
I'm in the UK over the pond this might have a different name?
Can you post a picture of what this looks like? If you have time and no inconvenience to you. If you can locate a suitable driver bit on Ebay UK and post link. That would be great, if not, no problem.
Thanks.

[curtis cutter]

http://www.globalindustrial.com/p/tools ... fgodcVIDyw

[redneckalbertan]

Curtis posted a picture. The driver just has to match the head of the screw.

I prefer hex head self tapping screws. You can get them in Philips and use a Philips driver, I don't know if you have Robertson screws and drivers over there, they would be my second choice.

[pollys1dad]

Found what you mean in the UK. Will use a center punch to start them off, the big drill has variable speed so will use that.
Thanks.

[reggie_obe]

Screws pictured are Tek(s): http://www.tekscrewscentral.com/

[pollys1dad]

Ordered similar in UK.