Quote:
Originally posted by leejsmith
i agree the dimples are so small it would be impossible to do anything else. But utabintarbo asked for the bullcut so i did it.
does cathars design have flat dimple bases or cup shape ? i thought he had cup shape as he got the idea from a cup under a tap.
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i am pretty sure he said they were going to use a ball nosed endmill, so if they are it would be cup shaped.
Now we have conflicting reports here! One side says the Cups are better and one side says the flat botton is better.
If you go with the flat bottom the flow and pressure rate may suffer, but you should get more direct pounding against the bottom of the hole to reduce the boundry layer.
Or if you go with the cup, the water flows pretty nice and it should get the flow rate and pressure up and may also reduce the boundry layer because of that?
Or am I all messed up?