Dumb Question about finish sanding

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Forum topic by NeophyteGrant posted 10-24-2019 07:55 AM 600 views 0 times favorited 6 replies Add to Favorites Watch
View NeophyteGrant's profile


147 posts in 1758 days

10-24-2019 07:55 AM

Topic tags/keywords: sanding finishing cauls

I have finished some great oak cauls, complete with t-slots a la bowclamps. Used the clamped spacer method to get perfect mating camber.

I was thinking of putting a coat of poly on them, then waxing them. I’m inexperienced in finishing, but it seems like the durability and non stick would be nice.

Anyways: I’m worried that when finish sanding, even by hand, I’ll manage to bring the caul out of flat or ruin the camIber slightly starting with a 120 grit, by not doing it evenly/being absent minded. Is this a thing or am I OCDng?

6 replies so far

View Fred Hargis's profile

Fred Hargis

7242 posts in 3742 days

#1 posted 10-24-2019 10:30 AM

That wood will change more on it’s own than it will from your hand sanding…unless you sand it for several days.

-- Our village hasn't lost it's idiot, he was elected to congress.

View bondogaposis's profile


6049 posts in 3600 days

#2 posted 10-24-2019 01:04 PM

Poly and waxing them will work, you’ll have to rejuvenate the wax frequently. Packing tape will work better, and rarely needs replacing.

-- Bondo Gaposis

View wildwoodbybrianjohns's profile


2843 posts in 796 days

#3 posted 10-24-2019 01:37 PM

Packing tape will work better, and rarely needs replacing.
- bondogaposis

Good tip. I use this method also.

-- WWBBJ: It is better to be interesting and wrong, than boring and right.

View NeophyteGrant's profile


147 posts in 1758 days

#4 posted 10-25-2019 05:23 PM

Thanks for allaying my fears. It all went well, except when rounding it over I managed to screw up square on the cambered end because I presented it to the bit in a very dumb way. planed it down, going to redo the camber at slightly thinner board thickness. I manage to make everything difficult.

View OSU55's profile


2837 posts in 3239 days

#5 posted 10-26-2019 05:30 AM

I’d recommend shellac vs poly – dries and cures faster and the protection offered by poly isnt needed. Wax the whole thing then packing tape on the inside that touches. You should trim both cauls to the same thickness so they apply equal and opposite force when clamped.

View Spotcheck's profile


36 posts in 3776 days

#6 posted 10-28-2019 07:20 PM

I have packing tape on my set made from 8/4 HM. Original tape from 20+ years ago. Works perfectly.

On the finish – I’m from the “its simply a tool” school. Like my workbench. No finish, no nothing. If it gets too much dried glue, just a card scraper, fast swipe next time ROS is handy, whatever.

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