A noob water block design. Input and ideas welcome!

[utabintarbo]

Originally posted by #Rotor
JD, how is this for an idea. pre drill the holes such that when you go with the final sqr-end bit, that it's diameter is such that each hole just barely cuts into one another.

the only reason this is not possible with a drill-press and normal drill-bits, is the fact that the bits are so bendy and braky..

this will give the formed pins the perfect shape. the Sqr-end bit will also not be so prone to wander, as it will be cutting on the perpendicular plane to the downward force applied.

I was of the understanding (mistakenly?) that this would result in pins being too small - copper/water ratio being all wrong. No?

Bob

[jaydee]

Originally posted by #Rotor
JD, how is this for an idea. pre drill the holes such that when you go with the final sqr-end bit, that it's diameter is such that each hole just barely cuts into one another.

the only reason this is not possible with a drill-press and normal drill-bits, is the fact that the bits are so bendy and braky..

this will give the formed pins the perfect shape. the Sqr-end bit will also not be so prone to wander, as it will be cutting on the perpendicular plane to the downward force applied.

You could do it with a ball nosed endmill and plung drilling with it and then make the final run with a sqare ended endmill to make the bottoms flat. Drill bits, as I found out this weekend, are to flexable. Even with the mill they didn't make a perfect grid. One of the projects on my list is to use ball nosed endmills for the grid holes. Might make the pins to small though as pointed out. I will have to draw it out a few times and visualize.

[#Rotor]

oh ya... drill-bits are completely useless, for doing it this way.....

if the overlapping is such that the opening being formed between the 2 holes are not too big, (about 1 - 2 mm for a holesize of 5mm) then the Cu \ H2O ratio should still be exceptional.... The ratio is important, but what is much more important, is getting the pin shape right..... the resultant turbulence being created by a grid of properly shaped pins will instantly nullify any shortcomings as 'n result of a slight imbalance in the Cu/H2O ratio, up to a limit, of coarse.