Contributing Member JLSleather Posted March 3, 2019 Contributing Member Report Posted March 3, 2019 I really must try that weldwood folks talk about. But I still have some this other stuff left, so I've had it in mind to pick up the weldwood next time I'm around a store. Meanwhile, I been usin' this Renia stuff. Green label. Works great - no complaints at all. Used by shoe / boot folk for a good while, so it certainly should hold belts/holsters/wallets. Tuolene free. Quote "Observation is 9/10 of the law." IF what you do is something that ANYBODY can do, then don't be surprised when ANYBODY does.
Members Toddo Posted March 4, 2019 Author Members Report Posted March 4, 2019 Well I got a little bottle of the Weldwood from Home Depot and I got my test piece glued up tonight. Right now the piece has got a little stiffness to it but it looks like I could bend it easily. It's not totally floppy like it was before I glued the felt to it. It's 6-7oz leather and I did apply two coats to both pieces letting the first coat dry like 25 minutes before I applied the second coat. The reason I wanna do the overkill on the test piece is that I want to intentionally try to make this glue make the piece stiff by applying the double coat and letting it dry for days and even up to a week. If I can make this glue make the test piece stiff by any means then this glue is not what I'm looking for. I'm hoping this bag will be around for 100 years so I really do want give the glue a thorough test. 100 years is a long time for that glue to get hardened up and stiff. Quote
Members chrisash Posted March 4, 2019 Members Report Posted March 4, 2019 Somehow i doubt that felt will have a very long life before it looks tatty with wear, have you thought of lining with thin leather, much more hard wearing Quote Mi omputer is ot ood at speeling , it's not me
Members Dun Posted March 4, 2019 Members Report Posted March 4, 2019 (edited) I’m a little confused. Are you just making a bag with soft closure flap covering the bag? if so, can you just leave the top flap unlined? 6 oz leather is plenty strong so why even add a glue? If not I’d suggest just glue and stitching the edges, leaving the rest to flex freely without glue in the middle of the bending flap. You might have problems getting a substance like modern glue, that is designed to dry out with air contact and loose it’s liquid state, to last 100 years. Leather is porous, which is why it needs to be kept waxed to keep out moisture. Most belts are glued with the intention of flexing, but not also intended for that kind of duration Edited March 4, 2019 by Dun Quote
Members Tugadude Posted March 4, 2019 Members Report Posted March 4, 2019 I've been in the construction chemicals business for a long time and have sold various adhesives during my tenure. I know of no adhesive that will be reliable 100 years from now. I agree with the above that felt is probably not your best option here. If you want long term durability and the bag is really going to be used, a leather lining is the way to go. Folks here glue flaps of all sorts with Weldwood and Barge cements all the time and I've never heard of anyone complaining about the adhesive being too stiff. Never happened in my work either. I think you are right in testing what is out there but you might be overthinking this a bit. Quote
Contributing Member fredk Posted March 4, 2019 Contributing Member Report Posted March 4, 2019 1 hour ago, Tugadude said: I've been in the construction chemicals business for a long time and have sold various adhesives during my tenure. I know of no adhesive that will be reliable 100 years from now. I have. But you need to go back about 1000 years to find out how its made. It was used on some Viking leather items found in excavations in Dublin. It wasn't in the remit of the arckies to discover what the glue is/was, all they could say was it seemed to be pine tree tar and propolis and 'other' constituents btw, I agree that felt is wrong for the lining Quote Al speling misteaks aer all mi own werk..
Members Tugadude Posted March 4, 2019 Members Report Posted March 4, 2019 Maybe I should have said I know of no adhesive commonly available...besides, how will we know? Quote
Contributing Member fredk Posted March 4, 2019 Contributing Member Report Posted March 4, 2019 23 minutes ago, Tugadude said: Maybe I should have said I know of no adhesive commonly available...besides, how will we know? Dunno bout you, I plan to be around for a looooong time yet! Quote Al speling misteaks aer all mi own werk..
Members Toddo Posted March 5, 2019 Author Members Report Posted March 5, 2019 (edited) 14 hours ago, Dun said: I’m a little confused. Are you just making a bag with soft closure flap covering the bag? if so, can you just leave the top flap unlined? 6 oz leather is plenty strong so why even add a glue? If not I’d suggest just glue and stitching the edges, leaving the rest to flex freely without glue in the middle of the bending flap. You might have problems getting a substance like modern glue, that is designed to dry out with air contact and loose it’s liquid state, to last 100 years. Leather is porous, which is why it needs to be kept waxed to keep out moisture. Most belts are glued with the intention of flexing, but not also intended for that kind of duration It's gonna be a hybrid between this... and this.... Here are the patterns I made for it... And I'm gonna tool this design on the front flap... And use this for the front flap closure button that will have a rawhide string coming from the bottom of the bag that will wrap around it to secure the front flap... and.... it's gonna have black felt lining the inside. The side panels are gonna be a sandwich of 3 pieces. The interior board is 1/16" thick acrylic board and the side panel back will having sewing tabs that bend forward to sew to the body of the bag. Which will set the side panels in just about a 1/4" so the top flap completely covers the sides. Edited March 5, 2019 by Toddo Quote
Mark842 Posted March 5, 2019 Report Posted March 5, 2019 I Use the original Weldwood Contact cement everyday on a flexible product between to layers of 9 ounce latigo before sewing. It absolutely dries flexible. Barge does also, and I suspect Barge has a stronger bond but I don't know for sure as I usually sew the laigo pieces I glue within an hour of gluing them. I have pulled apart two pieces of oil tanned within a half hour of gluing with Weldwood and got them apart. I have tried to do so in the past using Barge and was not able to pull the pieces apart. Out of cusriousity, since my project was already ruined, I put the leather in a vise and grabbed the other half with pliers. It actually ripped the suede side of a 5 ounce oil tanned partly off before I got tired of tugging on it. I use the weldwood more often because it doesn't stink to high heavens and not everything needs a super strong grip. Quote
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