When we first started building our home ( ten miles past the "boonies" ) completely off grid at the time, most of the work was done with chain saws, I wanted one tool so went about building a circular saw attachment that was a direct bolt on, no mods or permanent alterations to the chain saw. The finished product attaches easily. Just remove the side cover bar and chain and replace with attachment. Keep in mind this was 20 years ago so chain brakes were still mounted in the side cover or easily bypassed. I haved used it on Huskies and Sthils but got shelved when safety features required redesign. Currently having problems uploading pics will add them as soon as I can.