Nine,
I’m glad to see you made a Wench.
Ditto PirateSteve on never experiencing a slip. Also on using a few stitches for peace of mind.
Ditto Steel on riveting.
Ditto Ike on doubling up on Velcro.
Also, simply driving a few staples through the Velcro and strap using a common desk stapler does the trick (make sure the “open” ends of the staples are on the Velcro side)
Personally I have never worried over this issue at higher weight because of the clamp reinforcing the strap’s hold on the Wench. I wonder: Are you using the Wench without the clamp? How that strap could make it’s way past a locked clamp is beyond me, so I’m thinking you were using it without clamp? That is fine, of course but you might want to use one of the suggestions above. It can’t hurt.
For anyone interested a few more things you can do to avoid this issue are:
Make sure the width of the Velcro strip never exceeds the strap width in size (no over-lap).
Cut the Velcro strips down from 2” in length to 1 3/4” length (this will ensure that the Velcro strip doesn’t ever hang over the Wench cylinder resulting in curling up).
The Velcro sticky backing works best on smoother surfaces, so taking a very hot iron to the two ends of the nylon strap before placing the Velcro strips down increases the hold because you have somewhat flattened the rough texture of the strap.
When attaching the Velcro strips to the strap be sure to really “knead” the two materials together - grind and press them between your thumbs and fingers (with this sticky backing the initial contact is the most important). Then, follow Steve’s idea about a rolling pin or like object.
It also can’t hurt to give things an hour or so to settle before using the Wench.
An idea that Ike came up with is to take a match or a lighter to the “cut” ends of the nylon strap. This nicely melts the loose strands of nylon together and prevents it from ever fraying and unraveling.
Lighting your Wench on fire while it is on your unit is not recommended.
—Cap