Reddit reviews Bosch CST1 1/2 In. Titanium-Coated Countersink
We found 3 Reddit comments about Bosch CST1 1/2 In. Titanium-Coated Countersink. Here are the top ones, ranked by their Reddit score.
Self-starting point starts on contactBalanced double fluteEliminates chatter and vibrationTrailing flute automatically deburrs holesResharpenable cutting edge enables longer tool life
Bought one of these half racks in great shape for $100: https://www.dickssportinggoods.com/p/fitness-gear-2017-pro-half-rack-16fgeufgprhlfrckxgmu/16fgeufgprhlfrckxgmu.
 
Good rack, but the standard J hooks were covered in a nasty rubber that created rubber dust when the bar slid against it. Decided to cover the J hooks in UHMW instead.
 
Materials needed:
12x12x1/4" UHMW sheet (don't buy less than 1/4" thickness since you are going to be countersinking the screw holes): https://www.amazon.com/Molecular-Polyethylene-Standard-Tolerance-Thickness/dp/B00CPRDLAW/ref=sr_1_3?ie=UTF8&qid=1493150072&sr=8-3&keywords=uhmw
Drill/drill bits
Phillips #2 screwdriver
Countersink bit (1/2" works well, something similar to this would be fine, it doesn't have to be a titanium coated bit since you're only counter sinking the uhmw): https://www.amazon.com/gp/aw/d/B000F3SI2O/ref=mp_s_a_1_7?ie=UTF8&qid=1493158184&sr=1-7&pi=AC_SX236_SY340_FMwebp_QL65&keywords=Countersink+bit&dpPl=1&dpID=51fQXRD5ZuL&ref=plSrch
A tap (I used 12-24 NC)
4 machine screws (I used 12-24 x 1/2")
Jigsaw or hacksaw (for cutting the UHMW)
 
Drill pilot holes in the J hooks, then run a tap through it to create threads for the screws. Go slow with the tap and use oil when tapping the threads. Cut the UHMW sheet to size with a saw. I tried using a hacksaw, but a jigsaw created much cleaner and straighter edges. Once the UHMW pieces are cut to fit your rack's J hooks, drill and countersink the screw holes in the UHMW. Attach the UHMW with the machine screws and you're done! UHMW doesn't work well with adhesives, so using screws is a more secure method of mounting the pads.
 
Once you've tapped the screw holes in the J hooks, it's very easy to replace the UHMW if it ever wears out. Just unscrew the old UHMW pads and attach a new pair.
interesting! here in germany, you get only counter sink bits, but they are solid in the middle and you can not put a drillbit through them. (like this: http://www.amazon.com/Bosch-CST1-2-Inch-Titanium-Countersink/dp/B000F3SI2O/ref=sr_1_2?s=hi&ie=UTF8&qid=1407663444&sr=1-2&keywords=countersink+bit)
any clue what to search for an amazon or somewhere else to buy such tools?
all I can find on amazon is in this imperial system, not metric. any clues where to get these?