MadModder
The Shop => Finishing => Topic started by: Rob.Wilson on May 05, 2013, 11:44:41 AM
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Afternoon Lads
Woke up yesterday with an itch I needed to blast and now that my welding shop is sort of usable I thought I would do a bit fab work and make a pressure pot for blasting , there is no way I would pay close too £200 quid for one , mine will cost me about £2 quid and thats for electricity ,cos I cant make that LOL
Mine will be made from free junk parts , scrounged and given , John donated the tank from an old compressor :thumbup:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060593.jpg)
Cleaned up the tank , cut off all brackets.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060594.jpg)
Cut down a 3" BSP lump of SS pipe for the filler and threaded up a short length of 1/2 pipe .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060595.jpg)
Cut a hole in one end of the tank for the filler .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060597.jpg)
and welded the filler neck in ,using dissimilar welding rods .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060599.jpg)
Then made up a trolley from an old sack barra and welded that to the tank , with all the welding to the tank done I gave it a hydraulic test .
Full of water .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060607.jpg)
Hand pump
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060603.jpg)
Tested to 220 PSI , I will be running the tank at about 90 PSI
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060608.jpg)
All being well it was given a bit of a paint job
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060610.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060614.jpg)
Still needs another coat of paint ,then I can get the pipe work fitted .
Rob
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Nice job Rob, :clap: :bow:
but yer welding looks like pigeon ****.....(not!!!)
What blast media you going to use?
I use garnet ( free from work) or chilled cast iron ( again from work) or ally oxide...
Ideally a tungsten tip is best, I found the ceramic ones dont last... :scratch:
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:lol: :lol: Thanks John
Garnet ,,,,,,,,,cos I can get it free :med:
Thinking about making my own nozzles and gun , as I can seam to fine any local .
Rob
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Rob,
Where is the blast media exiting the tank? :scratch:
I dont see a tee at the bottom...
Are you going to use a water trap/filter on the inlet?
What size compressor you going use? (let me guess, you got a second hand 90cfm diesel compressor from work for free... :lol: )
Waiting to see what creations you come up with for a gun/nozzles
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Hi John
From the bottom mate were I had the high pressure hydraulic line fitted for testing the tank .
I have a water trap fitted to my shop air pipe work , but I am still thinking of fitting one to the pot when I fined one , thought I had found one the other day ,
Pile of junk ,,,,,,,,,,,,cant resist ,,,,,,,,FREE STUFF
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_20130429_082619.jpg)
wanders over :ddb:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_20130429_082634.jpg)
Nice water trap/reg and oilier
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_20130429_082642.jpg)
Shame its 1/4 BSP no good for this project ,but it will do nicely for a power draw bar on the CNC mill ,also got a bunch of other useful tackle from the pile :med:
I have a 15 Cfm compressor works fine with my siphon blast cab , ist not like i am blasting for hours at a time ,I do have a spare 15 pump and motor unit I could add to the system if necessary .
Rob
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One mans crap pile another mans treasure.. that didnt come out right did it... :scratch:
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One mans crap pile another mans treasure.. that didnt come out right did it... :scratch:
:lol: :lol: :lol: close enough :lol: :lol: :lol:
Rob
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i can not resist having a rumige well dun rob :thumbup:
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Cheers Bob :beer:
Well got the pluming done today and not much else well apart from inspecting and building sand castles :lol:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060626.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060616.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1060620.jpg)
The tee is plugged were the blasting hose will go as I was testing the pipe work for leaks . Jobs a goodin suppose I better think about making a gun . Think I will make a bigger better blasting cabinet too :dremel:
Rob
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Great looking job Mate
Is that the floor of your welding shop I can see :lol: :lol: :lol: :lol: :lol: :lol: :lol:
John
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Rob
Looks like a crackin good job mate. You should pop that gague off and give it to Bob. I bet he could make it look like new in short order. Thanks for sharing it with us. :D :D
Cheers :beer:
Don
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Very nice :clap: :thumbup:
:beer:
DaveH
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that wood look beter in blue well dun do you need a flow meter for a mig welder
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Hi Rob , that looks double smart lad :thumbup: :bow: :clap: , you got that project done super quick too. It also looks like it wont take much space up , always a bonus !
Cheers Mick.
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I've go to stop looking at your projects Rob, as they give me ideas and feelings of indiquicy :bow:
Top job and looking forward to seeing this progress (unlike the cupola and the CNC refit but I won't mention those :poke:).
What is the reason for welding the filler to the neck with dissimilar rods?
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Here's my set up....
A few piccies of my pot, compressor, I've just finished doing some coz the valve has hole worn by the media and you can see the nozzle has a slot cut up its side.....
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Thanks for the comments Lads :beer: and apologies for the slow reply ,,,,,,,,,,,,,,,,LIFE GETS IN THE WAY SOMETIMES :Doh:
Top job and looking forward to seeing this progress (unlike the cupola and the CNC refit but I won't mention those :poke:).
What is the reason for welding the filler to the neck with dissimilar rods?
LOL thanks Mayhem ,,,,,,,,,,,,, I used dissimilar rods as the tank is carbon steel and the filler neck is stainless steel :zap:
Hi John ,, I like the look of your blasting gun , I am shure I could knock one of those up to morrow , I got a couple of sample 25kg bags of media today , may give the setup a try out tomorrow
Thanks Rob
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hi rob don't no if this is any good but i have been geting bags of sand from work its not bilding sand its sand that they put in the oven at work for drying the pant i have being puting it on me drive to fill in the gaps and im gowing to see wat tis like with a bit of cement mixt in to it it seem to have a uiniform grane sise you can cum and pic sum up if you wont
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Hi Bob ,thanks for the offer but,
If ist silica sand then its not safe for sand blasting , just so the lads should be aware Silica sands , beach , building sands are not safe for blasting , when blasting they break up and release free silica partials , which when inhaled will cause a horrible lung disease called Silicosis .RIP.
Rob
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Hi Bob ,thanks for the offer but,
If it's silica sand then its not safe for sand blasting , just so the lads should be aware Silica sands , beach , building sands are not safe for blasting , when blasting they break up and release free silica particles , which when inhaled will cause a horrible lung disease called Silicosis .RIP.
Rob
Err its also illegal to use sand for blasting if the Council get to know about it...
I have it on good authority,You could be prosecuted...
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i don't think its silica sand i will av a reed on the bags thay have at work its rathe expensiv stuff its over £10 a bag its bin kleend and washt then oven dryed well you no me if its bin thrown out i will av it if i have a yous for it
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Never new it was illegal John ,,,,,,,,,,,,shame they dont make smoking illegal
Bob ,,,,,,,,,, sounds like the sand may be just the job for core making :thumbup:, save is a bag mate :poke:
Rob
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will do