Sanding belts

More then one site has said to use PVA glue , or cyanoacrylate glue (super-glue)

An additional problem is that the cloth and resin may be drying out and making the paper stiffer. This would put more stress on the joint. I would pull the paper over a steel rod a few times to loosen it up before gluing.

I'll second the super glue. If it fails too, at least you'll have a lot of hand-sanding paper available...sounds like a plot to sell you more sanding belts, to me.

Sanding belts are spliced with tape across a skewed joint. If I use CA, what would I use for a backing? I tried filament tape and Gorilla tape, but they failed.

You need something that can handle the heat such as poly-adhesive tape

The joint failed at the glue line. Backing was still intact. Overnight, the tape just crept until the joint came apart. In actual use, the belt held together.

I used a brand new roll of Gorilla tape. I clamped the finished splice between two blocks of wood and let it set for about 20 hours. After putting the belt back on the machine, the splice started to creep after about 10 minutes and overnight, finally failed completely.

You are not alone...I have a makeshift plow that I use to grind welds in the flat...80, 120, 220 grit etc. I have three knack boxes full of belts that explode on contact. The vendors told me that humidity and time has rendered the belts useless. They to come apart at the splice only. Sorry I cannot be of help, but wanted you to know you are not alone. Needless to say, I have an endless supply of 1" to 1 1/2" sand paper of every grit. Incredible hey? Most of mine are Norton or 3M

The 1" x 42" belts are the ones I use. I looked at them at my local big blue box store and they didn't look like they would stay in one continuous loop for long.

I have not had that problem either at home where I may keep a belt many years before using it, or at our plants in southern CA. This leads me to suspect that the humidity in your area is the culprit. Try storing them in a sealed container with a desiccant.

You may be right about the humidity. My dehumidifier runs continuously and never shuts off.

i use to make my own because i had made a off size sanding machine use contact cement

nick

q.c.