Apologies if this is a bit long .... looking for some advice on plug & screw fixing.
I have a large quantity of raised garden beds ... so effectively a 100 wide brick wall.
I will be fixing 5mm plastic spacers to maintain an airgap (keep wood off brick) ......
end result will be: http://tinyurl.com/zfxjsar
On advice decided to use 152 x 7.5 concrete fixing screws http://tinyurl.com/z9g7scr
I will counterbore holes so I can glue in wood plugs ... intend using router to do this.
There are 2 approaches ...
Fixing option A http://tinyurl.com/zzkvu2u
where screws go in at 90 degree, would mean I need a jig of some sort to match angle of sloped section.
Fixing option B http://tinyurl.com/hrmgkkr
Or I simply dill in at 90 degree to surface of angled section - meaning fixing will be angled.
This may give a better fixing, and would mean no jig needed router would go flat on sloped section.
Welcome thoughts on this.
Secondly .......
Screw is 11.1mm across head ......... so need to counter bore to 12mm (or 1/2")
Option would be to use either a screw digger: http://tinyurl.com/zxeef7h
with plug cutter: http://tinyurl.com/jm8qv65 concern is only tool steel, and more than 200 plugs to cut.
not sure if these would be any better: http://tinyurl.com/jjb8jnz
I have a large quantity of raised garden beds ... so effectively a 100 wide brick wall.
I will be fixing 5mm plastic spacers to maintain an airgap (keep wood off brick) ......
end result will be: http://tinyurl.com/zfxjsar
On advice decided to use 152 x 7.5 concrete fixing screws http://tinyurl.com/z9g7scr
I will counterbore holes so I can glue in wood plugs ... intend using router to do this.
There are 2 approaches ...
Fixing option A http://tinyurl.com/zzkvu2u
where screws go in at 90 degree, would mean I need a jig of some sort to match angle of sloped section.
Fixing option B http://tinyurl.com/hrmgkkr
Or I simply dill in at 90 degree to surface of angled section - meaning fixing will be angled.
This may give a better fixing, and would mean no jig needed router would go flat on sloped section.
Welcome thoughts on this.
Secondly .......
Screw is 11.1mm across head ......... so need to counter bore to 12mm (or 1/2")
Option would be to use either a screw digger: http://tinyurl.com/zxeef7h
with plug cutter: http://tinyurl.com/jm8qv65 concern is only tool steel, and more than 200 plugs to cut.
not sure if these would be any better: http://tinyurl.com/jjb8jnz