Remove Rudder Cam Screw GW

Removing the Delrin Screw from H16 Lower Rudder Casting

By Gary Willcox 

I have done 4 castings now using a wood boring bit. It works great and I haven't had any problems damaging threads. Use a 7/16" or 1/2" wood bit the ones with the leading center tip. That tip keeps the bit centered in the delrin screw hole. You will then have a thin shell of delrin still in the threads. The old delrin is so brittle that you can chip it out with a screw driver. 

For complete details, see OTW archives at: 

Gary Willcox

P.S. Matt Miller of Hobie suggests that delrin fumes from torching is very toxic. If trying that method, do it outside! 

© Ken Christie 2022 - E Mail us for more info.