[xtremetechuk]

Looks surprisingly good,

I was expecting "handy man" approach, when you stated using a dremel.

Maybe I will purchase a dremel instead of CNC service.

 

[zipdogso]

Well I applaud you for that result using a dremel.........it's impressive. I have a well use dremel myself so I know the limitations.
I know of someone who made a block in 10mm copper plate using a high power hand held router....Personally I wouldn't do that either !!!!

I understand it is just a tester but as a block there are a few problems..... the groove for the rubber cord wont be deep enough...not with the rubber cords I have seen/used, the gap between this plate and the other will mean the water used as coolant for the most part wont even look your grooves - they will have neglible effect.
Then I am not sure about the grooves themselves.....
Finally, I doubt very much indeed, that you get a good fixing for the nozzles in just 3mm of thread. In copper you need a minimum of 6-7mm for a secure fix, less than this and once you have fitted and unscrewed them a few times it goes loose.
The main problem is 3mm aluminium is hardly block material.

 

[un-nefer]

Try using the thin cut wheel, it's 1mm from memory so they channels will be nice and thin

You'll have to make yourself some type of jig though, to keep everything nice and straight and even depth

 

[Crabid]

Quote:

Originally Posted by zipdogso;13277484
Well I applaud you for that result using a dremel.........it's impressive. I have a well use dremel myself so I know the limitations.
I know of someone who made a block in 10mm copper plate using a high power hand held router....Personally I wouldn't do that either !!!!

I understand it is just a tester but as a block there are a few problems..... the groove for the rubber cord wont be deep enough...not with the rubber cords I have seen/used, the gap between this plate and the other will mean the water used as coolant for the most part wont even look your grooves - they will have neglible effect.
Then I am not sure about the grooves themselves.....
Finally, I doubt very much indeed, that you get a good fixing for the nozzles in just 3mm of thread. In copper you need a minimum of 6-7mm for a secure fix, less than this and once you have fitted and unscrewed them a few times it goes loose.
The main problem is 3mm aluminium is hardly block material.

I have already deepened the grooves, but you're right, I'm going to order several different types of rubber cord to test, it's very cheap after all.

As for fixing barbs into the 3mm aluminium, that's not a concern at all, I'm going to use an acrylic or similar for the back. Much easier to thread and work with, also I can have it thick enough to support the bottom plate, it might for future blocks pay to put the groove for the rubber in that part instead of the actual block.