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Gold/Mining/Energy : Napier International Technologies Inc. (T.NIR) -- Ignore unavailable to you. Want to Upgrade?

To: Ginco who wrote (908)	7/25/1998 11:29:00 PM
From: Greg from Edmonton	Read Replies (2) \| Respond to of 2444

Here's the summary of my experience with Napier SV-35/A Epoxy and Polyurethane Paint Remover. I spoke with both Lorne Klipper (Napier's Product Manager) and Ron Graham of ICI / Devoe Coatings in Edmonton and they both recommended the SV-35/A product for my automobile restoration. ICI sells Napier's paint stripper product as "Hydrostrip 500", for which I have the product info sheets which also include instructions for applying the product. Product packaging. I ordered a pail, which contained 5 US Gallons. The plastic pail has a neat pull-out spout which helps if you want to pour a quantity into a smaller container. Attached to the pail was also a product label and also a WHMIS Material Safety Data Sheet. I used a plastic funnel to pour some SV-35 into a small bottle with a squeeze-trigger nozzle, intending to 'mist' the surfaces I wanted to remove paint from. Product characteristics. SV-35/A (foam) is an orange foamed emulsion, with about the consistency of hand lotion. I tried to gravity siphon the stuff into a smaller container but it was too thick for the plastic tubing I had. Effectiveness. OK I'm convinced that nothing ever works as good as you think it SHOULD, i.e. "something never works as good as it did on TV". But SV-35 comes closer. Yes SV-35 can take as little as 10 minutes to work, other times quite a bit longer. My initial test I suppose was when I was poured some SV-35 into a small bottle and spilled a few drops on the deep freezer. Any paint that was beneath the SV-35 had blistered, wrinkled, and lifted cleanly within 10 minutes. I was impressed. I imagine aircraft paint lifts similarly, as it would be applied fairly thin and aircraft do not have to deal with constant exposure to road grit in the same manner as automobiles do. That is, automobiles may have many layers of coatings in addition to paint which protects the automobile from rust such as sealants, primers, undercoatings, and rock guard. First test subject, my Mom had an antique milk can she wanted to have re-finished. Dad thought it was galvanized, so sand blasting was to be avoided. The milk can had MANY layers of paint and required several applications to remove all the paint. I tried SV-35 on several old car panels that were lying about. Some started to blister on the surface fairly quickly. Others took a bit longer but lifted eventually (overnight). Generally on automobile paints, the older type of paints seemed to take longer to lift (in my limited experience). SV-35 so far has removed or softened paint and primer of all types, and considerably softened undercoating. It even seemed to soften up plastic body filler (bondo) somewhat. I would have had my sister try SV-35 as a nail polish remover but she is away from my parents' place (peace!). She presently uses some solvent-based stuff which stinks up the house regularly. Application. The spray bottle was a good one I guess, but the SV-35/A foam does not "mist". Being quite thick, it just squirts out instead. I used the spray bottle to apply the stripper either directly to the surface or with a paint brush. I also used a scraping tool in my efforts. The stripper is best applied quite thick, the paint brush tends to thin it out and better results can be had by "dabbing" with the brush. A spray application would be even better though, I think an "undercoating / schutz" pneumatic spray applicator would work quite well for larger jobs. OK so maybe I cheaped out using the spray bottle & paint brush & scraper tool approach, applying several thin coats instead. An application often took several coats depending on the thickness of the coatings involved. But I only used about a quart to remove the coatings on the rocker panels (bottom) of both sides of my car, and the milk can, and on various test patches. The SV-35 cleans up quite easily with water. The paint brush and its bristles were unharmed. Negative comments or experiences? None really major. One car I tested it on the roof and nothing happened, but it lifted the paint on a vertical surface after awhile when further tested. I assume this was because the car was sitting beneath a tree for quite some time and had quite a layer of tree sap to keep the SV-35 separate from the paint. The only other circumstance where SV-35 did NOT work was when I tried it on kiln-fired ceramic, but I wasn't really expecting it to work there. That would've been REALLY impressive if it had separated kiln-fired glaze from ceramic. And one other thing, I used a plastic tupperware funnel to pour SV-35 into the smaller container. The SV-35 discoloured the plastic slightly, creating a chalky haze where it came in contact. But I suppose it could be polished out from the plastic. Comparison with Methylene Chloride based strippers. I checked the paint stripper departments of Home Depot and Home Hardware, all the strippers on the shelf had the skull-and-crossbones (poison) symbol. Some were also corrosive or flammable. Napier's SV-35 product is at least equally effective, and completely benign in comparison. Also check out my comments on the MSDS, posting #870 on this thread. Message 5263253 My neighbour is also restoring a car and has used Methylene Chloride (MC) paint strippers. My neighbour has also used some of my SV-35/A that I ordered, but not to the extent that I have. I got my neighbour to provide his comments about MC strippers, since I have no real experience in working them. MC really cuts through coatings vigorously but it is also toxic, carcinogenic, and emits harmful smelly vapours. Exposure can be painful to the skin and causing redness. Even minimal backspray from pressure washing a surface with MC based stripper can really hurt one's face I have been told. MC evaporates quickly so if the surface is left with the paint not physically removed, the paint can re-harden to where it becomes at least as difficult as before the MC was applied. In comparison, SV-35 actually works better when it is left some time to penetrate and lift the coating. SV-35 does not allow coatings to re-harden and can be misted with water if it remains long enough to dry out. My neighbour says that the Napier stripper "seems to have quite a bit going for it". I have realized no harmful effects with using SV-35, in my experience SV-35 seems quite safe AND effective.