|To join together MDF cornice, it is best to cut mitre joints, with an electric mitre saw e.g. ELU or Makita mitre saws.
Ensure that both surfaces to be joined are clean cut and are free from oil or grease stains, which can reduce adhesion.
Try the join "dry" first of all, to ensure it meets perfectly.
Using the dropper bottle remove the top and drop onto one side of
|the joint face one or two drops of adhesive, taking care not to spill or touch any of the adhesive with skin.
Then using the activator spray a tiny amount onto the opposite side of the joint.
Quickly line up the two sides and offer these together, ensure the mitre is properly aligned and push the two sides together quite firmly, holding for 15 seconds