Thread: Best anodizing guide?
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02-10-2017 #11
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02-10-2017 #12
The specific heat capacity of water is 4.184 joules/gram/deg, so to raise 5 litres of water from 20 to 80 degC, would take 1255200 joules (4.184 * 5000 * (80-20)), or 0.349 KWh. Now if you've only got 120W, that means it would take 2.91 hours (0.349 / 0.12) assuming you have zero heat loss.
However, unless you've got insulated containers, I'd doubt you'd ever get to 80degC.Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
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02-10-2017 #13
Pretty much spot on. Tried it for the hell of it and got the top third of the water to 50c/
The rest stayed at 16c (workshop room temp). That was nearly 1 hour.
I am thinking 1000w min really as I don't want to wait too long for it and once one puts the part into the bucket the temp will go down quite a bit. So need it to be fast enough to recover from that.
Wondering if something like this would work?
https://www.aliexpress.com/item/900W...809794841.html
Keeping in mind a 5L bucket is around 200-220mm tall?
Not sure if these are designed for water but should be okay as long as the top is kept above water line I believe.
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02-10-2017 #14
With something like that, I'd be making sure they were well earthed, and powered via a good RCD.
Have you had a look at any of the youtube videos for ideas?
I've got these saved in my watch later list
https://www.youtube.com/watch?v=BtYHcsq7s5A
https://www.youtube.com/watch?v=GccTVfMiIIo
https://www.youtube.com/watch?v=TGi-nqNnENE
It's been a while since I watched them, so can't remember exactly what they covered, but they must of contained something worthwhile that I never deleted them after watching them..Avoiding the rubbish customer service from AluminiumWarehouse since July '13.
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03-10-2017 #15
Thinking about it.
Cleaner, Dye and Sealer don't care if they are in a metal container?
Why not just use stainless cooking pots and put them on those cheap hot plates?
http://www.ebay.co.uk/itm/Single-Ele...EAAOSw-K9ZIxN4
As variable knob too so could potentially not even need thermostat controller?
Obviously not put the acid/lye in these, they still need plastic containers.Last edited by JOGARA; 03-10-2017 at 02:28 PM.
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03-10-2017 #16
that's probably the way i'd do it personally yeah
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The Following User Says Thank You to Zeeflyboy For This Useful Post:
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03-10-2017 #17
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03-10-2017 #18
Okay so here is my shopping list for each step.
Washing between steps
1 PP tub http://www.ebay.co.uk/itm/Plastic-Bu...72.m2749.l2649
Deionised water (got loads of but will be buying more)
1 spray bottle
Cleaner
Stainless steel pot 5L http://www.ikea.com/gb/en/products/c...-art-80129725/
1000w Stove http://www.ebay.co.uk/itm/Streetwize...72.m2749.l2649
Cleaner poweder https://www.ebay.co.uk/itm/381987813243
Etch
1 PP tub http://www.ebay.co.uk/itm/Plastic-Bu...72.m2749.l2649
Lye https://www.ebay.co.uk/itm/231690311428
Desmut
Stainless steel pot 5L http://www.ikea.com/gb/en/products/c...-art-80129725/
Desmut https://www.ebay.co.uk/itm/352012108749
1000w Stove http://www.ebay.co.uk/itm/Streetwize...72.m2749.l2649
Anodize
1 PP tub http://www.ebay.co.uk/itm/Plastic-Bu...72.m2749.l2649
1L sulfuric acid https://www.ebay.co.uk/itm/141920434018
Titanium wire for holding work piece https://www.ebay.co.uk/itm/221839543...r=520722722260
Not sure if to go lead or aluminum cathodes?
Already got my DPS5015 with 480w 48v PSU and some 18awg silicone wire.
Not forgotten about air agitation, just testing my old air pump first.
Dye
Black Dye https://www.ebay.co.uk/itm/253186569978
Stainless steel pot 5L http://www.ikea.com/gb/en/products/c...-art-80129725/
1000w Stove http://www.ebay.co.uk/itm/Streetwize...72.m2749.l2649
Seal
Stainless steel pot 5L http://www.ikea.com/gb/en/products/c...-art-80129725/
1000w Stove http://www.ebay.co.uk/itm/Streetwize...72.m2749.l2649
Sealer https://www.ebay.co.uk/itm/382075702419
Looking good? Already bought some stuff like the stoves, PP buckets. Not got any of the materials like acid, dye etc yet.Last edited by JOGARA; 03-10-2017 at 11:30 PM.
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03-10-2017 #19
If you have a mains thermostat just tape the probe to the outside of the bucket accuracy will be good enough.
I use these
http://www.ebay.co.uk/itm/220V-10A-M.../142426824134?
daily very reliable never had one fail over 5 years.http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm
If you didn't buy it from China the company you bought it from did ;)
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03-10-2017 #20
I presume that as long as the temps are in the ballpark around 120-140F then it is okay? Don't have to be so bang on?
[edit]
Multi buy, 3 for 2 https://www.ebay.co.uk/itm/292039778...r=591027809178Last edited by JOGARA; 03-10-2017 at 10:59 PM.
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