Attaching building brackets to an outdoor Leca wall

[hempularen]

In Leca, it should be possible to drill with a regular wood drill for 25-30 mm. Then, however, it probably won't be suitable for wood anymore.

 

[fredwel]

If there are only a few holes, it should work, depends a bit on how hard the plaster is. It might help if you pre-drill with the largest concrete drill you have through the plaster. Worth trying anyway.

/fredrik

 

[Funkybase]

Do you attach the actual post to the post shoe with a lag screw?

 

[fredwel]

Yes, or through bolts. The ones I found did not have the holes aligned with each other, so it became French wood screws. It probably would have been quite tricky to drill that straight as well...

/fredrik

 

[Funkybase]

Should one use a hammer drill or just a regular drill (is it enough) for the holes in the leca? I'm a bit worried that the blocks might crack.

 

[klaskarlsson]

Should I use a hammer drill or just a regular drill (is it enough) for the holes in leca? I'm a bit worried that the blocks will crack.

You should be able to drill leca with a regular drill. A hammer drill might risk cracking something as you said...

However, buy a proper drill bit that is sharp and durable, not a 20-pack for 29 kr

/K

 

[Funkybase]

Great, thanks, one more question. Do you need to buy a special chuck for such a powerful drill??

 

[Totte_S]

Great, thanks, one more question. Do you need to buy a special chuck for such a powerful drill?

"Proper" drills in larger dimensions have a milled attachment so they fit in most 13 mm chucks. But you'll probably notice that when you find the drill on the shelf

Regarding what was previously mentioned in the thread about chemical anchors

I thought the glass ampoules required a special device. But maybe it was just to ensure precise crushing of the glass?

When I installed equipment in laundry rooms in apartment buildings, we used chemical anchors in glass ampoules. We crushed the ampoule with a threaded rod with a hex attachment at one end, so you could drive it into the "chemical" with a screwdriver, and it got well mixed in the hole. Once cured, the threaded rod stayed there, allowing you to attach whatever you wanted with a nut.