Coil Ears Repair!

rled2005

New Member
Joined
Nov 24, 2018
Messages
1
I repaired the coil ears on my Teknetics G2. I bought a sheet of ABS plastic on Amazon .177" thickness. I made a paper template by laying a piece of paper between the ears and shaping the paper to fit. I cut 2 pieces of ABS to stack between the ears for support of the new ears. I roughed the ABS a bit, then used Oatley's ABS glue(medium black); The Oatley's contains acetone and MEK which melts the ABS surface. I put glue on the coil surface, glue on the first bottom piece, clamped those together for 15 minutes. Then added the second piece on top, glued them together and clamped again for 15 minutes. Then I cut a couple of squares off of the sheet big enough for the ears(a little bigger than the original), I clamped them together and the shaped them on my belt sander copying the original. After shaping, then while still clamped, I drilled a pilot hole for the rod/shaft. I grounded off the remains of the coils original ear sides with my Dremel to make a flat surface to glue the ears onto. When gluing the ears to the sides, I placed the rod/shaft end with the rubber washers in between, as to not allow the clamp to cave inward. I glued and clamped the ears for 2 hours. After 2 hrs. I removed the clamp and let it cure overnight. Done! 10 times stronger.
I repaired the coil ears on my Teknetics G2. I bought a sheet of ABS plastic on Amazon .177" thickness. I made a paper template by laying a piece of paper between the ears and shaping the paper to fit. I cut 2 pieces of ABS to stack between the ears for support of the new ears. I roughed the ABS a bit, then used Oatley's ABS glue(medium black); The Oatley's contains acetone and MEK which melts the ABS surface. I put glue on the coil surface, glue on the first bottom piece, clamped those together for 15 minutes. Then added the second piece on top, glued them together and clamped again for 15 minutes. Then I cut a couple of squares off of the sheet big enough for the ears(a little bigger than the original), I clamped them together and the shaped them on my belt sander copying the original. After shaping, then while still clamped, I drilled a pilot hole for the rod/shaft. I grounded off the remains of the coils original ear sides with my Dremel to make a flat surface to glue the ears onto. When gluing the ears to the sides, I placed the rod/shaft end with the rubber washers in between, as to not allow the clamp to cave inward. I glued and clamped the ears for 2 hours. After 2 hrs. I removed the clamp and let it cure overnight. Done!

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Hey! Welcome to the Forum and nice work on the repair! Yeah! I have one of those 11"DD FTP coils, (which I love), but those ears are very thin and weak! The lower rod will wear a groove in them and eventually saw them right off!! So good on ya! I repaired mine with JBWeld a few years back..no troubles...

Oh yeah...I shoulda used some of the leftover fins to make some gussets out of, but hey...
 

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You could use Lego blocks in an aceton solution. Rigid plastic in no time ...
Select any color that matches your original ears..
Beware of aceton though !
 
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