SupcoFPT15

I read dozens of fin comb reviews and eventually decided that most of the bad reviews are by the class of people who think Scrubbing Bubbles and Swiffer will magically keep your bathroom clean. If you have any touch for working materials instead of forcing them, I suspect most nylon fin combs will work for you. Especially, if you use a lubricant. D'oh! One reviewer suggested WD-40; I used a silicon spray because it was handy; I suspect a soap such as Simple Green would also do fine. If, however, you expect to just slide one of these down through the fins and all will be well, then forget it, go play some video games instead -- even a metal fin jack won't help you.I ordered both the FRC6 Fin Comb Set and the FPT15 Fin Jack, both by Supco (Sealed Unit Parts Co), because I wanted to be sure to get the job done in one sitting -- and because I was curious as to why nobody was talking about these metal fin jack tools. As it turned out, either one would have done the job... but I'm glad I had both. The nylon fin combs were easier to use, in general, than the fin jack (but, perhaps, only 20% easier). The fin jack, however, was much easier and faster to use on severely bent fins, such as what you might get from a baseball hit (perhaps twice as easy). The fin comb can straighten perhaps 2-3 severely bent fins at a time, whereas the fin jack can do 4-5 at a time in addition to doing it quicker.The FCR6 Fin Comb Set comes with sizes from 8 to 20, skipping 19, paired like so: 8&10, 9&15, 11&13, 12&14, 16&17, 18&20. I gave the set four stars because the teeth on the 14 comb were bent enough to be frustrating if I had needed it.The FPT15 Fin Jack indicates it is good for 14, 15 & 16 fins per inch. Mine actually matched up with the 16 comb and not the 15 comb. Close enough. My York AC unit has fins ranging between 15 and 18 per inch depending on which side and area. 15-16 was nominal. Anyhow, the FPT15 worked fine on all areas including the areas with 18 fins per inch -- many fins just spring back into place when you use next to the right size comb. Still, when I felt like being a perfectionist, I would then redo areas I just used the fin jack on with the right size nylon comb (namely, the 18 comb).According to the packaging, Supco also has FPT10 and FPT13 fin jacks, good for 9-10 and 11-13 fins per inch, respectively.Other hints:If you have any fins severely mangled with a complex bend, expect to do some preliminary work with a pocket knife before combing. I needed to do this only a couple times and the fin jack got everything else just fine.Straighten severely bent fins by starting from the back side of the bend so that you pull them out and away from the rest of the bent fins. Always overlap with straight fins in this case -- don't use all the teeth to try to straighten fins.The nylon combs worked best with a lot of wiggling to work the teeth through the wavy fins. The fin jack goes in too deep to be wiggled side to side.The results won't be perfect (corrected fins won't be perfectly straight or wavy) but they will be good enough to work fine and look decent.Did I mention lubricating yet? Well, do it. I spayed the fins and the tool. This left some greasy spots but those should go away after a few weeks. Try a soap instead if you like and rinse it off, maybe that will work, dunno. I tried spraying just the tools but this did not feel adequate to prevent too much wear.

Excellent tool for cleaning up badly bent radiator fins.

Horrible product.

I got so-so results using this tool. It works on slightly bent fins, but on severely bent fins (where the area has completely closed off the ventilation) it did not work at all, in fact if you weren't careful you would end up bending more fins.You know what I found that works on severely bent fins? A screwdriver. It's slow and tedious but you can use a simple screwdriver to slowly straighten out the fins and open up its ventilation without bending the surrounding fins.

did the job on radiator ,and ac fins

I use this to straighten the smashed fins on our window air conditioners. It works well and is kind of fun to use.

Got this for my A/C unit but I haven't gotten around to work on it yet.

Didn't really work for my residential unit. It seems like the metal fins were not the right shape and would get out of the groove and actually smash more fins flat. Maybe this would work in a very specific application.