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In Reply to: RE: Replacement for screw type speaker terminals? posted by triamp on April 10, 2016 at 18:16:22
hi, the delrin is not really necessary since the binding posts are insulated. You can use a strip of heavy gauge Aluminum which is easy to work. As you can tell by your photo getting the holes perfectly aligned so it looks more professional is hard to. You need to measure your drill marks precisely and drill the holes exactly. Of course if you are a wiz with a drill press and you have it set up with jigs it will be 2 shakes to precisely drill holes. cheers, Dak
Follow Ups:
I agree about using aluminum. Delrin is too soft, and most all plastics, especially soft types like delrin or teflon will 'cold flow' under pressure, which will cause the posts to loosen over time. When we use plastics like this at work, we need to use Belleville spring washers to keep tension. Over time, they too will loosen, so not a long term solution.
There is a very simple trick to that. Get some prepunched perfboard (circuit board) with .1 inch spacing, cut it down to the same size as the item that you are going to drill. Use a sharpie to mark the holes you want to drill, for spacing etc. Securely tape the perfboard to what you are going to drill using clear packing tape, then drill away. The holes in the perfboard will act like a guide for your drill. You may want to start with a smaller drill and work your way up depending on how large a hole you are drilling.
Cal
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