I quickly made a plan and draw a graph for the two types of fender brackets required, with one spare each.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 21.jpg (199.53 KiB) Viewed 1118 times
Two smaller drill bits are used to create a small hole approximately where a larger hole should be. Forget about using a full size drill bit to create the hole directly of the right diameter, the large bits will just tear apart the plasticard and you will never be able to do this part.
I used the following method; the larger holes will be created very slowly using the sanding bit that you see on the picture. First attached to the Dremel, then to the drill for slower adjustment. It does not cut the plastic, it kinds of slowly melts the plastic depending on the pressure applied to the V shaped bit, and it does it very precisely and cleanly. When a hole gets towards the right diameter, move to the next, then come back for more adjustments in relation to the 4 holes in sequence. This process took about 30 minutes in total for 4 brackets.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 22.jpg (237.96 KiB) Viewed 1118 times
After another 10 minutes of fine tuning, i have my core brackets made and they ready to be cut from the plasticard plate for further refining.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 23.jpg (220.19 KiB) Viewed 1118 times
The brackets after more refining, done on both sides. Sometimes, a specific hole needs to be moved in some direction because it is not centered, the correction is done with the bit while each hole is slowly reaching its required diameter. Then the holes are slowly polished by hand on both sides using the bits. These are extremely fragile parts and extra care is needed.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 24.jpg (278.41 KiB) Viewed 1118 times
The finished fender brackets ready to be mounted on the hull. They are not perfect but close enough. Someone more patient can achieve perfection.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 25.jpg (263.3 KiB) Viewed 1118 times
View of all the parts that i created over the past couple of days.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 26.jpg (313.36 KiB) Viewed 1118 times
The rear tow brackets and hooks are installed over the holes that were properly located. The hooks are moving loosely.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
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- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 27a.jpg (146.13 KiB) Viewed 1118 times
The holes for the frontal tow brackets were badly located. The holes need to be filled, and the brackets positionned like this.

- 1/16 RC USMC M-60A1 US tank with ERA - Build
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- 1/16 RC USMC M-60A1 US tank with ERA - Build
- Screenshot 28a.jpg (178.64 KiB) Viewed 1118 times
Continuing on following post