`state
Yorkshire and The Humber
Posts: 1,215
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Need abit of advice about which compressor to buy guys.I`ve been building a mk1 astra 3dr estate for the last few years and now its come to the paint stage. As ive done everything else myself i`d really like to have a go at spraying it too.Even if i did the prep and primer,then let a pro do the top coats itd be worth it for the learning curve.
Had a look on ebay and theres one thats got a twin motor,3hp,50l and 14cfm. Says its up for running paint guns ect.
So would this be big enough for a diy paintjob or am i better off saving to get something even bigger?
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Look at all the plastic people who live without a care.Try to sit with me around my table,but never bring a chair.
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rodney
Posted a lot
https://www.facebook.com/RD-vehicle-transport-and-recovery-services-525622614268010/
Posts: 1,677
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yes you need a minimum of 50 litres to run a gun etc ,.
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facebook: rodney dean / rd transport  |
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`state
Yorkshire and The Humber
Posts: 1,215
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Thanks for the reply.The more i look at compressor`s the more confusing it gets. So whats best? Big cfm or a big tank? I can get one with a 100l tank but it`s only about 8.5cfm.
Or get the 50l one with 14 cfm.
I know which gun you use also matters but i havent looked into them just yet.
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Look at all the plastic people who live without a care.Try to sit with me around my table,but never bring a chair.
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Lopez
East Midlands
Posts: 867
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I've got a SIP 3hp 50l which is fine for spraying and running air tools.
It refills pretty quickly so the lack of a massive tank isn't a huge issue. 100l tanks are big, the 100l model would not have fit under my 2 level workbench which would be seriously inconvenient.
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`state
Yorkshire and The Humber
Posts: 1,215
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I think ive found just about the best one that i can afford.Its from machine mart and is 100l,14cfm and 3hp. Should be plenty big enough for aything i can throw at it.
Its only 75 quid dearer than the 50l,14cfm one so i think its worth the extra spend.Got the chevette to do after the astra so want something that will cope well and last.
Thanks for your replys guys.
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Look at all the plastic people who live without a care.Try to sit with me around my table,but never bring a chair.
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93fxdl
Posted a lot
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Posts: 2,019
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just to put the cat amongst the pigeons
I rubbed down (using a cheap da) and sprayed a mk 2 transit camper using a 2.5 horse 25 litre tank aldi compressor with a camping gas bottle added on to provide extra tank capacity.
finish was acceptable (not great) but that was due to my rushing and it being my first attempt at spraying. plus it was done in my front garden.
would have been a lot better if I had wet sanded and polished it
total cost was £75 for the compressor and spray gun and £0 for the gas bottle as I had it kicking about and the da cost about £20
get yourself commercial airline fittings as the hobby ones are restrictive on air flow
ttfn glenn
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Last Edit: Oct 2, 2011 20:43:05 GMT by 93fxdl
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the size of compressor you need is relative to the consumption of the air tools you are using. I use a 2.5hp 8cfm 25l compressor, and the only tool that it struggles to supply with enough air is a 3" cut off tool. If I used a spray gun that used 12cfm I'd have issues as my compressor wouldn't be able to supply the volume of air required. if you're using a compressor continiously, (like grit blasting for 30 minutes) then a larger receiver wont make much difference if the air requirements of the tools is higher than the output of the compressor. the last spray guns I bought were Low volume low pressure (LVLP) sprayguns as they have a low air requirement, but they may take a bit longer to spray the same area as High Volume Low Pressure (HVLP) or conventional spray guns the spray guns I bought were www.ebay.co.uk/itm/LVLP-Mini-Gravity-SPRAYGUN-/400240852266?pt=UK_Body_Shop_Supplies_Paint&hash=item5d3036bd2awww.ebay.co.uk/itm/LVLP-Gravity-SPRAYGUN-/400246235601?pt=UK_Crafts_DrawingSupplies_EH&hash=item5d3088e1d1so far Ive just used the mini spray gun and the results looks pretty good to me. utimately you should be thinking of what quality finish you require and be looking at the spray gun first. my way of thinking is that if you don't spray that often, the worlds best spray gun wont give you show standard paintwork, but if you're good at spray painting, then a poor quality spray gun wont give you show standard paintwork either. for that reason I didnt spend a fortune on painting equipment |
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`state
Yorkshire and The Humber
Posts: 1,215
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Its only really be for the spraygun. Ive got an electric da sander and don't have any other air tools. The guns ive being looking at use about 8cfm on average,so 14cfm should be more than enough.I thought the bigger the `tank` the better as it should be longer between it needing to top itself up.
I'm going to be wanting a really good finish.Ive done abit in the past but mostly on vespa`s and bikes.Its something ive always wanted to learn too so rather than wanting to do it to save money,I'm doing it as i really want to.Which in my eyes makes a hugh difference.
Ordered some dvd`s and a book from egay too so going to get busy watching/reading and try to learn as much as i can whilst doing the prep.
I'm actually really looking forward to it!
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Look at all the plastic people who live without a care.Try to sit with me around my table,but never bring a chair.
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yes you need a minimum of 50 litres to run a gun etc ,. Sorry but I do not agree. I have painted two cars on the cheapo Aldi one with suction fed and gravity fed and had no problems whatsoever spraying complete cars. It is only 24 litres |
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mitchy
Part of things
Posts: 62
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Oct 13, 2011 22:10:13 GMT
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i have also sprayed with the aldi compressor and found it good for the money
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Oct 15, 2011 22:21:45 GMT
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Ive got the netto compressor plumbed up to a big propane bottle for the extra storage, and have had no problems spraying, even managed a good finish with the £2.50 netto spray gun
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I don't WANT TO DIE A GROWN UP!
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93fxdl
Posted a lot
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Posts: 2,019
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Oct 16, 2011 16:27:58 GMT
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currently lidl have a v twin compressor on offer for about £180
afaicr 3 hp
ttfn glenn
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Oct 17, 2011 13:51:35 GMT
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Most delivered cfm (motor hp) is what you want firstly, though there is a balance in that smaller tanks make hot wet air.
You can paint with a 1.5hp 25 litre comp, but only with a low-consumption mini-gun, and patience. Got one such which takes only 2-4cfm.
HVLP guns generally want a lot of air. "Conventional" guns use less.
Bottom line, you need to match how much air the gun wants, and the FAD (free air delivery) of the comp, within reason.
Note that the comp cfm quoted is usually the displacement, which looks better.... e.g. my one with 14cfm displacement has about 9.5 FAD.
If using a small tank don't skimp on regulator/water trap, and have it as far from the comp as you can (more chance for the water to condense out).
It is poss to get more than 3hp on single-phase, but it costs ££s. 3hp will want a 16A line.
It's also poss to link comps together, with some provisos.
Belt drive is much quieter, much cheaper to repair, and makes higher pressure, which is useful. 115 vs 150psi is typical.
It's perfectly poss to get good results out of a cheap gun, I've done pearls & candies with them, but likewise sometimes a cheap gun really is only fit for the bin (done that also).
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'66 Amazon <-> '94 LS400 <-> '86 Suzuki 1135 EFE
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