Recently I had to attach a heavy cooker hood to the ceiling with four long 8mm bolts. That can only be done with strong expansion bolts or chemical anchors, which I didn't had. But I always have polyester filler on stock, which I wanted to use. I have the four bolts immured herewith and the result is astonishing, the bolts are impossible to loose:

Wall-anchor1
Super strong wall anchor with polyester filler

The advantage of 2K polyester filler is the long shelf life, wide availability and you can use the filler for many more applications. I used a small screw to clamp the bolt during the curing time:

Wall-anchor1
Super strong wall anchor with polyester filler

 

 

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