munzieb Posted March 2, 2018 Report Posted March 2, 2018 Last year I had a problem with the lower blade tensioner on my EX-16. ( I'm a top feeder) I guess I had been tightening it too much and the marriage of steel bolt and aluminum was not going well. The threads were not tightening anymore. Seyco had a lower mount replacement and ordered one. While I was waiting for shipment to arrive I decided to try something different. I swapped the hex screw and tightening bolt and it actually worked pretty well. I had to add some loc-tite to the stripped side and I was back to scrolling again. The new unit arrived and I stored it knowing I would eventually need it. I kept thinking about this aluminum steel marriage and knew it would happen again. I ordered a M6 x 1.0 helicoil repair kit from the internet. I kept it in standby for future repair. Today my swapped arrangement failed and the bolt kept turning.... Time for replacement. The swap out went well and I was up and running again. It was time to try the helicoil. The kit came with the correct drill bit to bore out the old threads. I used my drill press and arbor and drilled all the way through, then I put the included tap in the drill chuck and hand turned the tap to make the new thread into the housing and used cutting oil (WD-40 would have worked). Every 1/2 turn I would rotate backwards to break the cut chips free. The kit comes with a helicoil insert tool and they threaded in very easy. The kit also has a install tang removal tool. Place the mount in the vice, inserted the tool, gave it a tap with a hammer and the tang was gone. (remove tang after installing each individual helicoil) Now I'm ready for the next eventual thread failure with a modified helicoid unit. The kit came with 20 spare threads so I'm good to go. Rob, OCtoolguy, Karl S and 1 other 3 1 Quote
OCtoolguy Posted March 2, 2018 Report Posted March 2, 2018 7 minutes ago, munzieb said: Last year I had a problem with the lower blade tensioner on my EX-16. ( I'm a top feeder) I guess I had been tightening it too much and the marriage of steel bolt and aluminum was not going well. The threads were not tightening anymore. Seyco had a lower mount replacement and ordered one. While I was waiting for shipment to arrive I decided to try something different. I swapped the hex screw and tightening bolt and it actually worked pretty well. I had to add some loc-tite to the stripped side and I was back to scrolling again. The new unit arrived and I stored it knowing I would eventually need it. I kept thinking about this aluminum steel marriage and knew it would happen again. I ordered a M6 x 1.0 helicoil repair kit from the internet. I kept it in standby for future repair. Today my swapped arrangement failed and the bolt kept turning.... Time for replacement. The swap out went well and I was up and running again. It was time to try the helicoil. The kit came with the correct drill bit to bore out the old threads. I used my drill press and arbor and drilled all the way through, then I put the included tap in the drill chuck and hand turned the tap to make the new thread into the housing and used cutting oil (WD-40 would have worked). Every 1/2 turn I would rotate backwards to break the cut chips free. The kit comes with a helicoil insert tool and they threaded in very easy. The kit also has a install tang removal tool. Place the mount in the vice, inserted the tool, gave it a tap with a hammer and the tang was gone. (remove tang after installing each individual helicoil) Now I'm ready for the next eventual thread failure with a modified helicoid unit. The kit came with 20 spare threads so I'm good to go. After doing this, you'll probably never have to do it again. Did you use some thread locker on the helicoil? More than likely, it will never fail. R Quote
NC Scroller Posted March 2, 2018 Report Posted March 2, 2018 By chance can you post a link to where you purchased the kit? OCtoolguy 1 Quote
OCtoolguy Posted March 2, 2018 Report Posted March 2, 2018 47 minutes ago, NC Scroller said: By chance can you post a link to where you purchased the kit? YOu should be able to find one on Amazon. All you need to know is the size of the threads you want to replace. Or change to. R NC Scroller 1 Quote
OCtoolguy Posted March 2, 2018 Report Posted March 2, 2018 Here ya go. https://www.amazon.com/Wisdomen-M6X1-0-Thread-Repair-Helical/dp/B071YNM8D8/ref=sr_1_6?ie=UTF8&qid=1519957371&sr=8-6&keywords=m6+x+1.0+thread+repair+kit&dpID=41C16VYB61L&preST=_SY300_QL70_&dpSrc=srch R NC Scroller 1 Quote
Karl S Posted March 2, 2018 Report Posted March 2, 2018 (edited) When I was in Maintenance we used a LOT of Heli Coils and they were our go to repair for failed threads. Wise choice you made there. Edited March 2, 2018 by Karl S OCtoolguy and amazingkevin 2 Quote
munzieb Posted March 2, 2018 Author Report Posted March 2, 2018 Ray, you found it. That's the right kit. It has everything you need to fix it. OCtoolguy 1 Quote
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