Like many others I mourn the loss of the Abrafile attachment to fit hacksaw frames. Tile saws seemed to be the closest approximation but very thick diameter and clunky ends needing big pilot holes.
While browsing in Axminster I saw their Japanese Free-Way Saw and was taken by the very thin spiral blade that is available for it. The problem was that the blade had a chunky loop at each end to grip it in the saw frame. The loop is crimped to the blade with a small diameter boss not unlike the diameter of the bulbous ends of the Abrafile.
On one end of the blade I trimmed off the loop to leave just the boss. I then replaced the non handle end of the saw body clamp with a 7mm square 36mm long section piece of steel with a tapped M4 hole in one end. At the other end I milled a trough (12mm) to take the boss and a lead hole/slot to suit the blade diameter.
The blade mount is fastened in place with a M4 cap head and washer and the blade is tensioned as normal by revolving the handle.
The blade stroke length is reduced to around 4.5" but that aside the blades are quite aggressive on brass and aluminium.



