AM Arrowmax Honeycomb Arm Reamer (4.0mm)

Ok so I’ll admit it’s so hard for me to give this a 1 star review because every one of the other 23 or 24 Arrowmax V2 tools I got over 4 years ago get 5 stars all day every day because they have been far and away the shaft style hand tools I’ve owned, and while they aren’t completely perfect or free of any flaws, I’m certain not one completely perfect tool exists. However, I got this hole reamer after my first Tekno experience taught me that they definitely need the arm holes worked over. Because I my first Tekno brought me so much enjoyment I had 3 more on the way and I needed a tool to help me get them ready for real action, they are just so tight when you first try to insert the swing shafts. Now I had never previously used or even needed a hole reamer even after maybe 50 kits, so when I busted my shiney new reamer out and saw how nice and sharp and precise the shaft looked and felt, I thought it would only be 2 or 3 strokes before possibly damaging the holes beyond repair. What I discovered was that no matter which direction I probed the hole from, I went slow and smooth, even going so fast and rough that I began perspiring profusely. I even went for the reverse ream, where the reamer just flips over on a sturdy flat surface with the shaft pointed straight up without any movement, so then the arms slide along the shaft doing all the work and making any needed adjustments. Eventually when enough time has passed and it appears the desired results are no closer than they were in the beginning, even more aggressive and risky maneuvers are attempted. With the arms still on top and doing all the work, normally super dangerous and risky side pressure while traveling the entire length of the shaft is added, all different directions and angles with varying levels of forc. more pressure and speed is used, these are risky moves than would normally destroy any arm hole and could just snap the reamer shaft clean in half. Frustration is setting in and now people nearby hear 2 to 3 loud clapping sounds every second as the arm slams down on the area surrounding the base of the reamer shaft. At this point I’m so close to just giving up because the early enjoyment of the new tool has been replaced with anger about spending 20 bucks and not leaving a single mark on any of the holes, and fear is creeping in because at this point it is inevitable that the arm is going too hard and much too fast while still using all of the shaft. Seconds later it happens, what every reamer fears, the arm got too close to the tip and slipped out, but because of the excessive speed, and weight behind each stroke, before any evasive action can be taken, the arm slams back down but this time both it and the shaft have changed trajectories just enough that all the speed, weight and uncontrolled force cause the shaft tip to miss the hole by maybe an inch, causing a point near the center of the reamer shaft to buckle under the immense pressure, eventually giving way and causing the once stiff, perfectly straight shaft to fold over with a unrepairable 90 degree bend, obviously bringing an end to horribly failed attempt and using this reamer to work over Tekno arm holes. A good two hours of non stop reaming, every one of the 12 arms was thoroughly and extensively reamed from both directions, in both holes, and every single one had the same outcome. Not a single swing shaft felt any closer to perfection after two hours. They still required force to be fully inserted, and tools were required to remove them due to excessive tightness. It seems impossible after so much wild hard reaming which caused Me to worry the holes would begin to overheat and deform from a lack of cooling lubricants. A sharp shaft pounding though a tight soft hole should eventually reshape it at least temporarily, but maybe these holes are just different and require something much more exotic and what many would call too risky, like a shaft with a gritty surface that could even be combined with a power tool to spin it up to and over triple digit rpm’s if the arm could take it.