You've probably already seen the trick about using the internal stiffener of a spent disposable foam brush for spreading glue, but here's a way to go it one better.
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DAP 16 oz. Weldwood Carpenter's Wood Glue 7079800491 - The Home Depot
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DAP 16 oz. Weldwood Carpenter's Wood Glue 7079800491 - The Home Depot
DAP 16 oz. Weldwood Carpenter's Wood Glue 7079800491 - The Home Depot
A groovy way to put the squeeze on glue squeeze-out
Replying to @Louise, 2023 Bride Fabric glue for all of your DIY needs