Will this work or is there a better way to make this large delrin thrust washer

Yes! scary for that matter. It s a simple part. Don t over think it. Delrin cuts easy but please pay respect to it. Drill, bore, face, turn ( if you need the concentricity) and part!
 
Why can't you make this out of flat delrin in a simple drill press setup ? Hole saws would do this in 5 mins .
 
mmcmdl said:
Why can't you make this out of flat delrin in a simple drill press setup ? Hole saws would do this in 5 mins .
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I don't have a drill press and I don't have any hole saws. While it is possible that the ID would exactly coincide with the cut produced by a hole saw it would be a lucky chance. It is likely that the id will be a critical measurement as it will either fit over the rudder shaft or in a recess on the top face of the rudder tube. I also have no idea how thick it will be untill I get the old one out.

I do have a lathe and I think I should be able to do a good job on the lathe. I will buy a bit of 4 inch bar delrin before I pull the boat and drop the rudder.

I want to be as prepared as possible because this part is for the rudder on my boat which is also my home. Getting to it will require Lifting the boat out of the water and digging a hole under the rudder to drop the rudder.. This will take place on the small island called Carriacou.
 
This is part.
P. Waller said:
This is absurd.
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Still think it is absurd ? Yes I have a tailstock. And I could have centered it. And I could have drilled it . And I could have bored it. But the guy is on a boat with a small lathe and I was telling him how to do it safely without a boatload of tools. I doubt he could find the right size hole saws on a small island.
 
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