The Shop > Finishing
Tumbler Trials & Tribulations
1hand:
I checked again. 18hrs total. Not as dark, but diffenitly not a shine yet. I can see spots that all minor tool marks are missing and looks to be taking a sheen. I reduced the part load by a 1/3 again, and changed water. Back to the grinded.
I don't know if I stated that these parts are all 7075. I now there is a diffent difference in machining this alloy verus 6061, because of the hardness. This might be a contruibting factor in the finishing stage also??
Matt
foozer:
my pieces are 6061, tween that and 7075 wouldn't sweat it. Using a rotary tumbler if I recall, think days. If using wet method set the alarm for a fluid change check. Guessing that first run will pull most of the crud, second cleaner and third if need be ought to be fairly clean.
Think I'll go turn up a few pieces to use as test coupons, beats doing the dishes.
Robert
1hand:
They went from also black from the dry deburr to the dark silver so far. The two times I've changed the water, its is nasty black. Its getting removed slowly. I think I could change it every couple hours and that would speed up the removal of the oxides. Once that is done, I'm thinking your going to have some pretty nice bright looking parts.
I agree with leaving them for longer times with out changing the water is probaly hurting me more than helping.
Matt
foozer:
--- Quote from: 1hand on February 12, 2011, 12:47:16 PM ---
I agree with leaving them for longer times with out changing the water is probaly hurting me more than helping.
Matt
--- End quote ---
Sure its dependant upon material and media, from the cruising I've done a common theme is dirty water, change as needed. Also ran into a negative about simple green as caswells (sp?) Hard to believe a nice clean piece has so much dirt in it :)
Robert
1hand:
I'm using only the recommended rio brunishing compound now. I hope the parts look as good as they went in the first time. I like the sheen they had, but they needed the deburr. After the deburr though, is when the work starts to get them back. :hammer:
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