Glue-and-sander trick: best grit?

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Forum topic by Wiley posted 07-18-2010 02:57 AM 1900 views 0 times favorited 3 replies Add to Favorites Watch
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71 posts in 3301 days

07-18-2010 02:57 AM

Topic tags/keywords: question sandpaper

I’m a big fan of covering up small imperfections in joinery by dabbing glue on it and sanding sawdust into the crack. I know it’s a common technique, but I was wondering what grit of sandpaper people usually use. I’ve been using 100-grit, and it’s been using up sandpaper like there’s no tomorrow. (For some reason, when I got a new sander, the exact same sandpaper started getting gummed up three times as fast. Has anyone else had that happen?) I’m about to order a bunch of sandpaper from Industrial Adhesives but I thought I’d check first to see what grit other people use before I order myself a case of 100-grit.

-- "When you lose the power to laugh, you lose the power to think straight" - Inherit the Wind

3 replies so far

View lew's profile


12563 posts in 4026 days

#1 posted 07-18-2010 03:46 AM

I usually use this trick during the “first grit” sanding. Right now I am making some doll cradles. The stock came out of the planer smooth enough to begin sanding with 120 grit- so that’s what I used.

If the imperfection is on the larger/deeper size, I make a slurry of dust/glue, apply it and allow it to harden then sand- again using the grit size required for the first sanding. With this size defect, waiting for the glue to dry completely is necessary or the sand paper will clog.

I have never purchased from Industrial Adhesives. Have had great luck from

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View ToddTurner's profile


144 posts in 3594 days

#2 posted 07-18-2010 04:07 PM

Thats funny you mentioned how fast your paper gummed up. I noticed how fast mine did since the last time in put new paper on (Grizzly 26in dual drum). I actually tend to believe its the high humidity we are experiencing in the Mid Atlantic region right now. THe funny thing is, i just started after the last purchase of paper, which i got directly from Grizzly. Basically I am not doing any more sanding that absolutely neccesary right now, until the humdiity goes down some. Just my 2 cents worth. Hope it helps.


View 2Sand's profile


11 posts in 3205 days

#3 posted 07-20-2010 03:45 AM

It is less a question of grit, and more a question of glue. Liquid Hide Glue is what they used in the old days. The advantage of hide glue is that it takes stains far better than PVA glues. It also tends to clog less, since it dries hard. Titebond III tends to remain flexible after drying which leads to gumming the sandpaper.


-- Fast, Fair, Superior Sanding Supplies

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