This is what I have started using. At you Local Larger Upholsetry Shops they sell Backer Boards for Chairs &Sofas, the price is very low for a 4'X4'.I believe I payed less than $4.00.
I have been using the one with the Green Border and it works great for me... Better than Masters ....I am one of the few that Masters & Barge just tears me up.......I have NO POBLEMS WITH THE NEW TANNERS BOND..
You can get the same results with Footmans Loops..something tells me that Tandy now is selling an item similar to the footmans loops. I do like the Round one that you pictured...
Mike you got that right..I have been up one hill and down the other, with the True Brewers Pitch, Bees Wax and Epoxy....Did a lot of research and the Glass Bottle covered with Leather works for me and the folks i sell to.