I’ve been using the Paint Shaver Pro full kit to remove the paint from clapboards on a 220 year old farm house. I fully agree with the rather steep learning curve assessment. For me the primary issue is the mix of pre existing siding nails. Some were rusted forged nails, others newer thin steel siding nails, nada few larger headed and thicker shanked nails. You need to set or remove any nails because hitting one invariably cracks the clapboard. Unfortunately setting the old rusted forged nails also splits the clapboards. So after reaching the peak of the gable end I have arrived at the following. First use the smallest Japanese Shark Jaw nail remove to extract all forged nails. Then set all remaining nails and replace what is necessary with . Ring shanked siding nails. I also used a small rare earth magnet on a string to discover any nails that weren’t otherwise obvious and set them. To set the nails I used a Bosch palm nailer with the finishing nail head. Using a hammer and nail set is an exercise in masochism. The you run the Paint Shaver over thr lower half of the clapboard, followed by butting it up tightly to the clapboard above and remove the lower edge paint. It is still not easy work but it beats scraping by miles.. It does gave a tendency to run a bit when butted against the clapboard edge above. You can comfortably do about 4 tiers before pumping the jacks up higher. I definitely would discourage using the tool on a ladder or on ladder supported planking. It is a potentially dangerous high speed cutting tool so respect and sure footing are very important. I would liken it to using a router with a three inch diameter bit and doing a shallow cut free hand. In all it is a great tool and it does exactly what the demo shows. One of the nice deals offered is you can return the tool for a partial refund after the job is done., but I think any painting contractor would jump at the chance to buy it used.