Thixotropic wood grain filler for filling the grain of open-pore woods prior to lacquering or painting them. Grain filler fills the grain and pores allowing you to sand back to a flat surface ready for the sanding sealer coat, and ensures that finishes do not just soak through the wood. Normally, try to use the grain filler which most closely matches the wood which requires grain/pore filling. Neutral (Clear) grain filler is ideal for lighter woods. Our range of wood coloured fillers are great for mahogany, walnut, rosewood and oaks, and can also be used on lighter woods to give an amazing effect where the grain is dark but the rest of the wood stays its original light colour.
- Wood grain and pore filler
- Use on open-pored woods such as mahogany and ash
- Wide range of colours available
- To be used before sanding sealer, primer, lacquers and paints
- Not suitable for use with oil finishes
For special projects we also offer red, white, blue and black grain fillers. Our Cherry Red grain filler is ideal for use on mahogany before producing a dark Heritage Cherry Red finish, enhancing the depth of the final red colour. The Black and White grain fillers are suitable for Blonde or other see-through finishes where the aim is to emphasise the grain, or under solid colour finishes where our pigmented grain fillers can help reduce the amount of primer required, thus reducing the overall thickness of the finish. Our grain filler can be thinned with turpentine for easier spreading, and for cleaning up. Proper preparation, starting with the grain filler, is absolutely crucial to achieving a high quality professional finish.
Thixotropic grain filler changes in consistency when it is mixed. Before use the filler should be stirred thoroughly to mix it well, which will turn it in to a spreadable paste. The grain filler should then be scraped on to the wood in the direction of the grain. Using firm pressure and a good scraper - we recommend our rubber edged grain filler applicator - scrape the grain filler on forcing it in to the pores and grain of the wood. As soon as it is applied remove as much excess as possible, scraping across the grain. Allow to dry for 24 hours, and then sand smooth with 320 grit wet/dry paper before applying sanding sealer. Clear and dark thixotropic wood grain filler for use under all types of finishes including nitrocellulose and acrylic. This is the crucial first step to achieving a high quality professional wood finish, giving a surface which can be sanded back completely flat.
450g tubs will do a few guitar bodies.
How To Use Thixotropic Grain Filler
See our handy PDF guide, available to download here: How To Use Thixotropic Grain Filler
Click here to download a colour chart of the colours available: Thixotropic Grain Filler Colour Chart
Posted by Phil on 7th Jun 2017
I bought this in black and used it on a swamp ash body to fill and make the grain pop under a dye. It works really well, you can get great results with this stuff. I only give this 4 stars because of how thick it is, it goes on like tar and even when using with the scraper you have to work quick to remove excess as you go! Saying that though it sands down well but it isn't something you want to do by hand - apart from any horns on the body. Certainly gives you a great affect and with little watering down would be perfect
R&F Reply: Phil, thanks for your review. The filler will loosen up quite a bit if it is given a vigorous stir (this is the 'thixotropic' element), and can be thinned down further with cellulose thinners or white spirit for easier application. Using it thinner like this may require an extra application.
Does what it says on the tin!
Posted by Steve Jarman on 3rd Nov 2016
No problems here - fills the grain witout staining the timber.
Odd stuff but really does the job!
Posted by Steve Jarman on 20th Apr 2016
Strange to work with. I used an old Credit card to apply transparent filler to Mahogany. It goes on really well and you don't need much of it at all. Leave dry overnight and sand back with 400 then 600 before sealing. When sanded back, it gives an illusion of the wood being dusted with talcum powder which is a little worrying - but as soon as the sealer hits the guitar all that dissapears straight away to an excellent finish!!!