We will be doing a concrete pour on an existing basement floor / slab to even it out. I have seen a contractor use concrete screws to put in the forms. It is a time consuming process that has the potential of slight damage to the existing concrete. Is there a simpler/less destructive way to attach the forms to the existing slab - given the attachment is temporary and has minimal structural requirements?
Update More info was requested. This is a fix to the existing basement slab and the pour will be all the way up to the walls/drywall. Whether or not to put "protection" (e.g. a shim) between the drywall and the new pour is a separate question.