FormBoss Rubber Forming Strip
Stretch the rubber strip out, and push it under the FormBoss® folded top lip along the whole length of edging. It should stay there because it will expand when you let it go, if it doesn’t, try it again with a second person. It works best when you have two people to stretch the forming strip out. If it won’t stay put just tape it to both ends. Once you have done this you will now be able to shape the edging more aggressively without kinking the top lip. This reduces the minimum shaping radius by hand from around 1200mm to around 800mm, depending on the users previous experience. Rubber forming strips are highly recommended to all first time FormBoss® users who are planning tight curves. The forming strip can be used again and again, simply pull it from out of the top safety lip once your edging piece is shaped.