$32.99 Quart
In stock
Clear wood filler dries rapidly for quick sanding.

CrystaLac® Clear Waterborne Wood Grain Filler

Item #
68% of 100
CrystaLac® Clear Waterborne Wood Grain Filler
CrystaLac® Clear Waterborne Wood Grain Filler

Clear wood filler dries rapidly for quick sanding! It's great for exotic woods that are colorful, and it can be tinted with dyes or colors to match the wood. Makes an ideal wipe-on sealer for porous woods.


  • Just wipe on and trowel off with sanding between coats
  • Apply several coats on deep holes
  • It can be tinted with dyes or colors to match the wood
  • For best results, stain wood before applying filler
  • Minimal shrink formula
Caution: Avoid breathing sanding dust. Use an OSHA approved dust mask. Contains silica. Do no ingest. Keep out of reach of children. Keep from freezing.
(1) Quart of CrystaLac Wood Grain Filler
More Information
Brand CrystaLac
Manufacturer Part Number WOOD GRAIN FILLER QT
Weight 2.3500
Tech Spec No
Technical Documents
Dry Time No
Length No
Width No
Size Quart
Wood Glue Type No
Bristle Type No
Species No
3.4 / 5.0
50 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Wood grain Filler
Crystalac is a water base product that is easy to apply and easy to work with. My experience was better than expected. It filled in and smoothed out the oak that I was working on making for a great finish.
May 20, 2017
1 year ago
Woodworking Experience:
Great product
This product goes on easy and it is easy to work with. My results I wanted to accomplish was nice.
May 13, 2017
1 year ago
Woodworking Experience:
Great filler
Crystalac is a great wood grain filler. Used it with oak and being careful with the application one coat was all that was needed.
October 14, 2016
over 2 years ago
Woodworking Experience:
Good stuff
I use it a lot expecially when working with exotic woods. I apply by hand with rubber gloves and rub it in until it is not detectable to the naked eye. Then sand with my Klingspor sanding mop. Sometimes more than one coat is needs but it does the job. Particularly good where you are not applying a stain.
June 14, 2016
Woodworking Experience:
Works Wonders
I found that although it takes a couple of coats, this does a great job at getting into all the grain. I used it specifically for a Red Oak cabinet and the smoothness is impressive. A Great Product.
March 24, 2016
over 2 years ago
Woodworking Experience:
Easy to use
I have used various wood grain fillers, including one from a guitar material vendor, that have not been as easy to use as this product. It was easy to work with enough time to level.
March 24, 2016
over 2 years ago
Woodworking Experience:
Easy to use and dries fast. A bit expensive.
December 17, 2015
Woodworking Experience:
Very good product. Expensive but wrorth it.
October 20, 2015
over 3 years ago
Woodworking Experience:
Professional opinion...
There are many instances when a clear grain filler is really necessary. I'm glad this product exists.

What I've been surprised is how little is out there in the way of product guidelines and instructions for use. This stuff behaves uniquely and can have some funky interactions with our finishes.

It does dry clear, we routinely use it rather than burn-ins when the areas get large. It does tend to telegraph through until you get at least a couple of mils of film thickness over it, even if you wet sanded it out perfectly flat.

I have had little success in scrubbing out like is typical with mineral spirit and linseed-oil based traditional grain fillers. Instead, we generally find it better to use a straight edge or squeeqee to overbuild the area and then do a final cleanup wipe at the end. It's usually dry enough on thin builds to sand out in 15-30 minutes. The thicker builds we usually jump the gun and still coat while "white spots" are in it, but careful application will still allow the white to dissipate and the boil bubbles in the topcoat finish are small enough to scuff out in between coats - a real time saver. We've always hated using linseed-oil base and other slower-drying grain fillers for cycle times, and this one does not disappoint.

I read reviews about the difficulty in sanding, but the product wet sands with silicon carbide 220 or 320 just fine, and dry sands better with stearated "finish" papers better than catalyzed lacquer, so I am thinking the others opinions are more due to the fact they are used to sanding raw wood, but maybe not "fine finishes".

Anyways, your mileage may vary, but we have been happy to finally find a product that works to solve a problem that has before seemingly only had poor solutions.
October 9, 2015
over 3 years ago
Woodworking Experience:
Smooth as glass
Great product in works as advertised
September 28, 2015
over 3 years ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 15 questions Browse 15 questions and 58 answers
Why did you choose this?
Rockler Store
see if it works
MICHAEL S on May 1, 2018
Sealing and hiding grain for old oak cabinet I am painting
Thomas R B on Aug 30, 2017
see if it works
MICHAEL S on May 1, 2018
painting oak cabinets
Kurt Z on Jan 4, 2018
Sealing and hiding grain for old oak cabinet I am painting
Thomas R B on Aug 30, 2017
To fill an open-grained oak table top
John G on Jul 10, 2017
I want to have the tops of the tables smooth. I have used grain filler many times, but never have used CrystaLac. I am hoping that this works well.
Paul M on Jul 6, 2017
Initially, read good reviews. After using it for a year I am very pleased. It does what it's supposed to do.
Lew S on Mar 11, 2017
try it
mark c on Nov 2, 2016
Rec-emended by my son
robert b on Oct 17, 2016
I need a grain filler for oak cabinets. This is specifically designed for this situation. There are other products that can be used but their design is for other uses.
Robert E B on Sep 12, 2016
Blizz on Jul 10, 2016
Hope to get a polished look finish on Red Oak without the typical deep grain groves.
Grant C on Jun 13, 2016
to improve the quality of my wood finishing
DOUG T on May 15, 2016
To improve the finish on the guitars I am building.
KENNETH M on May 2, 2016
antique radio cabinet restoration hobby
Christopher Y on Apr 5, 2016
Was recommended on the Antique Radio Forum
James O on Mar 25, 2016
I've used this in the past; it works great.
Mark H on Mar 25, 2016
I had an order for a round kitchen table on a pedestal to be made of red oak. I wanted a very even colored, smooth glass like polyurethane finish on this very open grain wood. It was beautiful.
Carl B on Feb 21, 2016
I am running out
Temple B on Feb 8, 2016
Works wonderfully
James P T on Jan 26, 2016
read that it is a good grain filler and it proved to be great for the jobs I needed it for.
Raymond S on Jan 9, 2016
To try it out on an Oak project where I need a mirror finish.
Edward S on Dec 17, 2015
Your review said that this is good to cover woodgrain on furniture. To get a slick finish.
James R on Dec 14, 2015
To fill grain in segmented turnings
Mark R on Dec 13, 2015
discussion with sales person in store
dOUG H on Dec 1, 2015
I read the report and how this item works and the ease of using it.....
jim s on Nov 29, 2015
I thought I could try it out
Paul B on Sep 8, 2015
needed it for a Chinese bench made of oak and a new walnut table top on and antique table frame
Paul S on Aug 27, 2015
Making an oak table top and want to fill the grains in the oak plywood.
STEPHEN B on Aug 9, 2015
I'm impressed with the ease of use; does a great job of filling the wood in my scroll saw projects. I finish some of my wood with lacquer and the nice part is the wood still keeps its natural beauty.
Gerald S on Jul 12, 2015
Trying this product to help get a mirror type finish.
Guy B on Jul 11, 2015
preparing a finish sample on teak for a clear, full fill finish.
JIM T on Jun 30, 2015
need a product that will do what it proclaims.
stephen b on Apr 20, 2015
painting oak cabinets
Kurt Z on Jan 4, 2018
To fill an open-grained oak table top
John G on Jul 10, 2017
Can this product be used on marine mahogany planking under oil based marine finish?
John F on Jan 19, 2016
BEST ANSWER: The water evaporates when dry, but I have used a seal coat of shellac between water based and oil finishes with good results.
I'd like to use a stained wood filler to bring out wood grain in otherwise blah pieces. Can CrystaLac be heavily tinted with either dye stain or liquid dyes to accomplish this?
Monday317 on Dec 28, 2016
BEST ANSWER: I have added die to the filler and it worked ok but I have stained over top of it.
We "oaked out" and wanting to paint our staircase and want as little grain showing through the paint as possible. Paint stores say clean, sand, primer, sand, primer, sand, and on and on. We realize this is going to be a tedious project, but we do have more time than money and hope to get a good result. Will your wood grain filler do the trick?
Suzanne M on Jan 15, 2016
BEST ANSWER: Clean your project with water and a little dish detergent. Squeegee the Crystalac into the open grain. A little goes a long way. Let it dry and harden at least overnight. Lightly sand and then prime. Touch up with more Crystalac in places you may have missed, sand and reprime those areas. Sand those spots then paint as you wish. You should end up with a very smooth surface. Good luck
Bill T on Oct 20, 2015
BEST ANSWER: My project was a 22" x 96" tabletop. 2 applications of area and less than half used. Used as directed on unfinished wood. When clear coat was applied, white blotches appeared = a lot of sanding. Checked internet forums and same issues. Thought it was just me. On stained wood, it worked great. Will cover big projects...Hope it helps
After following the instructions and reading advice posted on rockler, I put two coats of crystalac on my mahogany piece. I went great except for, it seems to dull/not clear in certain spots. I can't figure out why these spots were different. It looked fine and level after application. I am learning constantly at this point so any advice on how to smooth out my issue is welcome. Thanks.
Bri B on Feb 26, 2016
BEST ANSWER: This generally happens to wood that isn't stained or treated with something prior to applying this product. The only way I found to remove blotches was to sand them out, and that means the whole project usually. When you think you have sanded it down enough, take a damp cloth and wipe it to see if there are still remaining blotches, If so, keep sanding. Good Luck. I ended up just using clear coats then wet sanding-then polishing-then waxing like you would a vehicle.
i have already stained my oak table top and have some minor grain that i need to fill can i use this on top of the stain and then put clear urethane on or should i try to fill grain with the urethane an answer would be appreciated ?
jack o on Feb 25, 2018
BEST ANSWER: If you put the filler over the stained surface, the stain will be removed when you sand the sealer off. It is very difficult to fill the grain with urethane. The best thing to do is put three coats of urethane on and then use the filler. When you sand down the filler make sure you only sand through the third coat off urethane so you do not damage the stain.

will it yellow in sunlight?
Damien L on Jan 14, 2017
BEST ANSWER: I don't think so. But just make sure that you use it only to fill the pores and wipe of all the rest, Let it dry properly than do the sanding . It leaves a nice smooth surface.
Have several oak projects ...large built-ins in LR, kitchen cabinets, stairs & banisters, and bathroom vanities. I want to COMPLETELY cover and smooth the heavy oak woodgrain before painting - some black, some white. I'm a DIY-er and this is my first grain-filling project. There is a shiny clear coat on all the oak, I assume poly?? What are my steps? Can this be applied directly to the cleaned shiny poly w/ no sanding first? Then follow w/ primer? Or should I sand, prime, then do grain filler?? (I realize I need to sand between coats, just wondering if I need to sand to start.) I've researched many grain fillers, I think this one looks easiest to use, esp for a first-timer on such a big project. Please help! Much appreciated!!
J. H on Apr 8, 2016
BEST ANSWER: Have never used this product in this fashion. But, I will say this as a x body man I never applied any kind of filler over a shinny surface because it would de-laminate over time. Sand your surface first and then go back over again with scotch bright to try to nock the shine off in the pours and then apply your grain filler.
Is Crystalac OK for filling the grain on an EXTERIOR door?
James E L on Nov 14, 2015
BEST ANSWER: You should be able to use it on a exterior surface, providing you use a exterior finishing product after completing the filling. Good luck.
Can this be used on vertical surfaces? If so, any suggestions?
Greg B on Dec 2, 2017
BEST ANSWER: Yes, It’s thick consistency allows it to be used on vertical surfaces. Best to apply in several thin coats without much excess to avoid extra sanding, but it does powder pretty nicely when it comes time to sand it.
Can this product be used for the cerusing technique? I am currently putting one layer of thinned latex on raw wood oak cabinets then putting one layer of water based General Finishes High Performance Top coat and I need a tinted grain filler to accentuate the grain and then I will put two more layers of GF top coat to protect and seal the cabinets. I need a good grain filler that doesn't wipe out as easily as furniture wax, something that can be tinted and something that can be top coat sealed with GF. Would this product work? Thanks!
Ashley J on Jan 30, 2017
BEST ANSWER: This would work, but I would put this on the Oak before anything else. Then you can finish it anyway you want.
Can I use CrystaLac between Cetol 1 and Cetol 23 applications on exterior mahogany door?
Michael S on Jun 18, 2016
BEST ANSWER: Providing the Wood is very dry , in between coats, I believe that it is ok to use it as a filler before using a good quality product for the final coats. Good luck.
I am building a project using Hickory, a very heavy and dense wood and plan to use a spray lacquer. The wood has been sanded to a 600 grit and I want to know if given the grit and the wood is it still recommended that I "level" it first? What is the best way to test to see if I need this?
Mark M on Jun 2, 2016
BEST ANSWER: absolutely not with crystalac. If you absolutely want to use lacquer then the sealer will be plenty. a couple coats with the sealer followed by light sanding with 300-600 grit. then the final coat will suffice. However you may consider using a product called waterlox, which is a tung oil based finish and and is very easy to apply. I've used pre-cat lacquer for years and waterlox for years.. years after application the waterlox looks far better then any lacquer i have ever used, especially in color. I use waterlox original for the first coat, wipe on liberally reallly let it soak in, then wife off. followed by several coats of waterlox satin, wiped on then quickly wiped off.
Is this heat resistant? I'm trying to line the inside of a wooden container for homemade soy candles... when the wax in thin enough during burning it soaks into the wood and seeps through all over the table. Want to make sure it won't melt off and go into the wax.
Paige B on Oct 26, 2015
BEST ANSWER: This is strictly a grain filler, not the final coat. It requires lacquer, polyurethane or a final top coat which should water proof or wax proof your box.
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