Lacquer spraying sequence

[RETIRED]

Look here as well.

http://encyclopedia.thefreedictionary.com/Lacquer
http://encyclopedia.thefreedictionar...nitrocellulose

[JB]

Gazza

If NC lacquers are only available to you in 40 litres then that rules that product out.

Ditto PC3210 pre-cat lacquer.

PC3220 is basically the same as PC3210 but costs a few dollars more. I recently swapped to PC3220 when PC3210 was no longer available in 4 litre tins. The finish seems much the same.

PC3210 and PC3220 are both usually touch dry in less than one minute.

Shelving units where flat components meet each other at right angles are among the hardest furniture items to spray finish. Spray disassembled as separate components where possible. Practice on some scrap nailed together at right angles. Thin the lacquer between 20 and 30%. Keep the gun moving.

[journeyman Mick]

Gazza,
I recently finished a 4litre tin of lacquer which was about 5 years old (decanted out of a 20l drum). As long as you seal the tin after use it seems to last almost indefinitely. Here's the secret to keeping the tins sealing well:
Before decanting any lacquer out of the tin remove the lid and either punch or drill about a dozen holes in the "gutter" part of the lip. This allows the lacqer to drain back into the tin rather than sitting in the lip and solidifying, which will prevent the tin closing properly. After you've poured the lacquer into the gun use the tip of a rag to coax any lacquer down the holes and wipe the gutter clean. I prefer using a sharp 3" nail and punching so as not to get any swarf in the lacquer.

BTW,
Shelf life = how long product will last unopened on the shelf
Pot life = how long a working time you have once product is in the spray gun, and mixed with catalyst, if it's a 2pak. This can be extended by placing the mixed product in the freezer during breaks. With epoxy 2paks you'll get overnight but with poyurethane 2paks they'll still go off in a few hours.

Mick

[MajorPanic]

PC3220 is basically the same as PC3210 but costs a few dollars more. I recently swapped to PC3220 when PC3210 was no longer available in 4 litre tins.

That seems funny as I bought 5 X 4ltr tins of 3210 from Mirotone @ Wacol only a week & a half ago.

3210 has better fade resistant qualities & will stand 'some' direct sunlight.

It also uses slightly different driers, I was told this by a rep, but I can't see any difference.

As Mick has stated opened tin life is long, for me it was about 9 months with almost a full pot left in a gun. It seemed to spray & dry fine, that's all I can say.

[RETIRED]

Gazza,
I recently finished a 4litre tin of lacquer which was about 5 years old (decanted out of a 20l drum). As long as you seal the tin after use it seems to last almost indefinitely. Here's the secret to keeping the tins sealing well:
Before decanting any lacquer out of the tin remove the lid and either punch or drill about a dozen holes in the "gutter" part of the lip. This allows the lacqer to drain back into the tin rather than sitting in the lip and solidifying, which will prevent the tin closing properly. After you've poured the lacquer into the gun use the tip of a rag to coax any lacquer down the holes and wipe the gutter clean. I prefer using a sharp 3" nail and punching so as not to get any swarf in the lacquer.

BTW,
Shelf life = how long product will last unopened on the shelf
Pot life = how long a working time you have once product is in the spray gun, and mixed with catalyst, if it's a 2pak. This can be extended by placing the mixed product in the freezer during breaks. With epoxy 2paks you'll get overnight but with poyurethane 2paks they'll still go off in a few hours.

Mick

Ditto.

[Gazza]

Hi evryone and thanks for all the information,

I went all over Perth on Saturday morning but could not find a stockist of Mirotone lacquers. I didn't think to ring around first as I thought it would be easy to get!

I ended up buying a 4l can of Protec Pre-Catalysed Lacquer from Timbecon which the saleman assured my was just repackaged Mirotone.

He also suggested I thin it 1:1 with their special thinners :confused: and could even go 2:1 (2 parts thinners, 1 part lacquer) :confused: :confused:

Mirotone product sheets state that you should only thin up to 10%, so maybe this is not what the salesman said it is.

There are no details on the can at all and they could not provide a datasheet.
Can anyone help out with any information regarding the Protec Pre-catalysed Lacquer from Timbecon?

Information such as thinning, application & drying details would be great, or if anyone has or knows where to get a data sheet from.

Thanks.

[MajorPanic]

Hi ya Gazza,

You can get all the Mirotone data sheets ya want HERE

I can't see thining by 1:1 or even 2:1 is possible with Mirotone products!

[JB]

Gazza

Mirotone is supplied direct from the company at their outlet in each state. Here's the link from their webpage with the Perth address and phone number:
http://www.mirotone.com.au/locat.htm

If it's not too late I'd take that tin of Protec pre-cat back where you got it. As far as I know Protec is a paint manufacturing company in South Australia and no relation to Mirotone.

You need a product with a comprehensive data sheet and most importantly an 1800 phone number to answer queries when things go wrong with lacquering as they inevitably do. Technical staff can advise you on changing to slower/fastr drying lacquers, using different products etc. They've got me out of many a sticky situation.

The Mirotone data sheet I have for PC3220 says you can thin this pre-cat product up to 20%. their technical staff say 25% is okay. I have successfully thinned it up to 30% and wouldn't hesiatate to thin it up to 50%. Maybe even higher; it's just an evaporative agent. I may be wrong on this.

[gatiep]

Hi evryone and thanks for all the information,

I went all over Perth on Saturday morning but could not find a stockist of Mirotone lacquers. I didn't think to ring around first as I thought it would be easy to get!

I ended up buying a 4l can of Protec Pre-Catalysed Lacquer from Timbecon which the saleman assured my was just repackaged Mirotone.


Thanks.

Gazza it's obvious that you didn't go all over Perth, ( ) because I saw some at Carbatec today ( Monday ). They had full gloss, 60% and 30% in 4 L containers. I will actually be getting some for my next harp, for wich I picked up some W.A. Sheoak from them on Friday. They also phoned the suppliers for me as I was hoping to get some 3210 in smaller packs than 20 L, but unfortunately they don't supply it in smaller packs. Maybe it's a good idea to let your fingers do the walking as fuel is almost as expensive as Mirotone.

Hope that Protec stuff is the same for you, but I don't know it.



Attached is a Mirotone 3220 spec sheet

[Gazza]

Gazza it's obvious that you didn't go all over Perth, ( ) because I saw some at Carbatec today ( Monday ). They had full gloss, 60% and 30% in 4 L containers.

Hi,

Well, I may have stretched the truth a little I suppose, but it felt like I had driven a hundred miles, I did go to Carbartec on Saturday morning as they are close to me but all I saw on their shelf was a couple of 4L cans of 3240 sanding sealer ???

I rang the Mirotone suppliers in perth here but they don't open on Saturday mornings so it is impossible for me to go during the day, carbatec pricing is over $30 a can more than direct from them!

[Gazza]

If it's not too late I'd take that tin of Protec pre-cat back where you got it. As far as I know Protec is a paint manufacturing company in South Australia and no relation to Mirotone.

I have managed to track down the agents here in WA for Protec, (no thanks to Timbecon) and they are faxing me a data sheet, they also have a full range of stains, etc for their lacquers so I will wait until I get more information and see where I go from there.

EDIT:
Protec just faxed me the data sheets and they read almost identical to the Mirotone ones. Seeing as I have already purchased it I might as well give it a go. I am going to their shop in Welshpool on Saturday to get some of their stain as well.