I sell suede to make strops with as it would get pretty expensive posting heavy strops around the world, but I thought I ought to show how to make them. I prefer a thick base as this gives clearance if you are stropping on a bench but also allows you to hold it safely from the back if you are holding the tool (such as an axe) still and moving the strop. Another popular option is a paddle strop, with a handle.
The backing needs to be hard and flat, softwood such as pine will compress over time. I have a strop made from pine that exhibits a wonderful wood grain pattern in the suede from repeated use. MDF is very good for this. Not something that I have in the workshop but I was able to get some from the unit next door, some chipboard was screwed and glued to the back to increase the thickness.
Make sure the backing is a few millimetres smaller than the Suede all the was around. In this case the suede I am using is distressingly white- it was very hard to keep it clean in my workshop for the duration of these admittedly poor photos. I use impact adhesive and you only get one go at fitting this. A glue like this which doesn’t dry hard is better, Epoxy or PVA will work but but can soak into and effect how the strop feels and holds the compound. It is important to get an even layer of glue for the join so you maintain a flat surface.
Then glue the suede down. Or to be more accurate I prefer to leave the suede on the bench and glue the backing down onto it, finding it easier to line up this way. Leave to dry then trim off the excess to get a neat edge.
Strop in use, touching up the knife. Suede is naturally abrasive so will dull edges quickly when you cut it, however this action also means it is ideally suited to use as a strop. It is however better to use a compound, it is so much quicker, even with a fine compound. You can often hear a hiss as it cuts. A thin layer rubbed into the grain cuts best. You can see how very quickly the compound turns black with metal particles, at this stage it is better to scrape it off with a blunt edge and re apply the compound rather than add more on top.