An Interior/Exterior Texture Paint
Posted 03 April 2012 - 09:12 PM
Motospray is owned by "HiChem", The distributors of theirs that I know are:
Autobarn (These products are now supplied instead of K&H)
Repco (If they are following suit with Autobarn)
There are also many small suppliers around me that stock them, so its worth ringing around your local area if you do have one of the shops listed above nearby.
To quell one thing now, ive had alot of people tell me that Motospray is cheap and nasty, but at the end of the day I like their products, they are always in supply (K&H couldn't supply my locals with their stock hence why they were replaced), and they are cheap. At the end of the day the only reason you are going to be unhappy with Motospray product is if you are not using the right product.
So getting into it, I have been building some new A Pillars for a while and wanted a good texture coat that could match factory trim, SEM is one brand that keep getting suggested to me, but for the life of me I could never find it, I also used Solagard Stone Finish colourmatched to my car seats but that was too coarse. If you do enough searching you will see that spray on sound deadner or stone guard will be recommended quite a bit, so I decided to give ago of Motospray "Textured Underbody Coating, Stone Guard".
Stone Guard is a flexible textured coating that is normally used under a car or in the wheel wells, it protects against rust, abrasion and water, a suitable topcoat would be an Acrylic Lacquer, or a 2 pack finish.
Colours: Grey or Black
Cost: Depending on where you go you should be paying about $11-$17 per 400gram can.
Prep: Depending on the substrate the correct prep work needs to be done, plastic needs to be primed with a plastic primer, very hard plastic will require an adhesion promoter and metal would require a surface primer. Prior to applying the product its ideal to use a Wax & Grease Remover to remove any residue that could contaminate the product. With this product I really suggest a mask, its a solvent based product and can do some real harm, if your sinuses start to burn your mask is no good and you need to get some fresh air and a better mask prior to continuing coats.
Application: Now this stuff can be tricky to apply, I would suggest a test piece first and when it comes to spray 2-3 light coats will normally do it but you would want to do it about 30cm's/300mm away from the surface because the stipple that this gives is what will give you a better texture, and too close this product will run easily. Allow 15-20 minutes between coats because it will need to touch dry and flash off.
Drying Time: As mentioned this will be touch dry in about 10-20 minutes but its a strong solvent so you don't want to try to topcoat it too soon, so give it 4 Hours when the air temperature is sitting at about 20 degrees.
Topcoat: For my pillars I topcoated them with an Acrylic Lacquer which contrary to the name is actually a solvent base, its cleaned up with thinners or mineral turpentine, most $10-$30 spray cans will be an Acrylic Lacquer as its the most popular single pack product nowadays. 2 Pack Finishes are also suitable for a topcoat, but if you are going to be using a Nitrocellulose be warned theses are very brittle for objects in exterior conditions and can crack up.
The following are some photos of the finish, they are very hard to get with the particular lens I have but that parts that are in focus are a good sample.
Pros: Covers very very well, takes seconds to apply when you get the hang of it, grey is a handy colour. Readily available.
Cons: Smells outputting from the solvents.
Summary: I will keep using this product because it is cheap, durable and I have at least 6 places in a 15km radius where I can pick it up from.
Posted 04 April 2012 - 10:46 PM
Good write up too!
Damo95 posting on iphone
Posted 06 April 2012 - 09:08 AM
You can get different finishes by the application technique. I've found that short squirts sideways (very thin coats with 45 mins between coats) approx half a metre away gives a sharp plasticy finish much like lukes picture above but with a greater/deeper definition
Also ensure the nozzle is always clean otherwise it can spray big droplets which will ruin your thin coats.