Aerosols vs pump CA accelerators?

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Amihai

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Oct 8, 2021
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23
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Israel
Hi all,
Just wanted to ask if there are any differences in finishing results between using aerosol accelerators and pump-driven (spray) ones?..
Due to air transport regulations, I can't ship aerosols outside of the US to my country. I had enough with the cheap Chinese ones which are sold here.
Also, I'm very sensitive to irritations caused by the fumes from the aerosol. I hope it will be better with a pump one. Thanks!
 
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BCnabe

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Apr 17, 2013
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78
Location
Hamilton, MI
I've used both without any issues but I prefer the pump style.

I might be wrong but it seems to me that the aerosol has more over-spray than the pump because it "blasts" a little harder.

I think the droplets of accelerator are larger with the pump style though. The aerosol seems to atomize the liquid into smaller droplets.
 

monophoto

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Mar 13, 2010
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Saratoga Springs, NY
I'm no expert, but my intuition suggests that:
  • The aerosol produces a more uniform spray than the pump arrangement (as suggested by Dennis), while a pump may 'spit' larger blobs
  • Droplet size is not a factor when CA is used as an adhesive, but a finer, more uniform droplet size could be advantageous when CA is used as a finish. That said, however, I believe that the general recommendation is to not use accelerator when finishing with CA, but rather to let the CA cure naturally.
  • The fact that a pump-style container may dispense larger droplets could mean that the accelerator in a pump will be used up more rapidly than in a aerosol. My experience is that I often have to apply multiple squirts with a pump because my sense is that the spray from the first squeeze is pretty anemic.
  • I would expect that the cost per unit volume of the active accelerator would be greater with an aerosol because of the added cost of the accelerant gas and the more expensive packaging. Also, you most likely can't purchase at the actual site of manufacture. Therefore, the purchase price will include a component for shipping from the point of manufacture to the point of sale, and I would expect that the cost of shipping an aerosol would be greater than the cost of shipping a pump (cost per unit volume of the actual accelerator) because the aerosol container is heavier and more bulky.
 

egnald

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Jun 9, 2017
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1,086
Location
Columbus, Nebraska, USA
I started with a pump and then moved to the aerosol. I am pretty sure that the aerosol gives a finer mist and I found it easier to hold the spray can farther away than I did with the pump. I always have a fan running to help disperse the fumes from the aerosol and I have a ceiling mounted air filter in my shop that helps too.

I do not have anything negative to say about the pump though. We all have to compromise and adapt our individual regimens depending on the materials and other resources that are available. Some members do not use an accelerator / activator at all and just increase the time between coats to allow the finish to dry.

I don't know all of the mechanisms used for keeping CA from curing, but one of them that I am aware of for most CA products is that they are made to be slightly acidic. The acid impedes polymerization, so anything that helps bring the PH slightly higher should help speed things up. Unfortunately, water and ultra high PH materials can also turn CA cloudy, so although water by itself should help speed up the process by PH dilution, it may also cause some discoloration (frequently a topic of discussion related to finishing with CA in areas of high humidity).

I wonder if the pump version of accelerator could be applied using an artist type air brush to help with atomization droplet size.

Regards,
Dave
 

mmayo

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Jan 12, 2013
Messages
2,187
Location
Tehachapi, CA
I tried the pump method and gave up. I’d like to succeed with a better pump, but I always use aerosols.

I’d switch back with bulk accelerator and misting pumps.
 

JohnU

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Joined
Jan 31, 2008
Messages
4,357
Location
Ottawa, Illinois
I prefer the aerosol over pump. I can control using a little but still get enough to work. With the pump I either under or over sprayed and had to be very close to the blank. I like to stay back around 10” when I spray so it’s not so concentrated in one spot.
 

Bryguy

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Joined
Jun 9, 2013
Messages
753
Location
New Hampshire
I use a pump. never had a problem with it and it is much more sensible from an environmental point of view. B'hatslacha!
 
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