OBG is available at my local Woodcraft store. So, that is one source. I think it comes in two sizes. Consider getting the smaller one even though it is cheaper per oz in the bigger bottle. This is because OBG (and any hide glue) has a shelf life, so you may not get through the bottle before it expires. Second, the smaller bottle warms more quickly in a bath of water, which is important if you don’t have a glue pot. Before I had a glue pot, I did as Larry describes, but I had to heat the water in the microwave a little since my water heater runs on the low side to save energy. I suggest you use a thermometer to see that you are getting to 140F. (Going much higher isn’t better and can degrade the glue.) You want the glue uniformly warm, so jostle the bottle about, let it sit some more, etc.
Make sure to check the date on the OBG bottle before buying or you may get an old one.
I use both OBG and freshly made hide glue. The OBG has a longer working time. Something weird has happened in my glue making that I haven’t figured out, but when I make fresh glue (from granules), I have trouble with it gelling up too fast when I apply it. haven’t figured out if it is age, moisture level, temp, or something else. You shouldn’t run into this with OBG.
Ultimately, I think you can use PVA glue. Almost everyone does. OBG is just an idea to give you something reversible. I’ll bet 99% of the people here on WWMC have gone through exactly what you are going through, i.e., learning to get the tightness just right, and have all done it with PVA and nail biting. I’ve been switching more and more to hide glue, but it is “one more thing to learn.” OBG does make it simple.
Oh! Store your OBG in the fridge so that it lasts longer. Before using it, after heating, put a drop on your thumb, press it against your pointer finger, open and close them a few times. Make sure it feels tacky and develops little strings between your fingers. That’s a quick test for whether the glue is still good.
- This reply was modified 1 month ago by Ed.