Uploaded September 2025 | Updated September 2026, 45 minutes ago
Traditional hand planesâthe kind with a movable frogâneed a sharp blade and a smooth sole to function properly. Once both of those are tuned in, thereâs another critical area to focus on: the mouth opening.
The space between the blade and the front of the mouth determines how well the shaving escapesâand how much support the wood fibers get during the cut. Open the mouth too wide, and youâll risk tear-out. Too tight, and the shavings will jam or the blade wonât bite at all.
But donât assume thereâs a one-size-fits-all setting. For heavy stock removal, a wide opening helps thick shavings exit cleanly. For fine smoothing, a tight mouth helps reduce tear-out by supporting the fibers right before theyâre sliced.
Thatâs exactly why the frog is adjustable.
Remove the blade and chip breaker, and youâll see two screws at the top of the frog. Loosen those, and depending on your plane, the frog may slide freelyâor use a rear adjustment screw to fine-tune its position forward or back.
Youâll need to experiment to find the right feel. But generally, a mouth opening around 1/16â is ideal for fine smoothing, while something closer to 1/8â works better for rougher cuts.
Once set, lock the frog downâand enjoy the control it gives you over every pass.
Besides this, the chip breaker needs to be set just right, since it works with the mouth opening to control tear-out.
Check out my other channel! â @makethingswithrob
Become a patron! â patreon.com/makethings â
Huge thank you to my patrons that keep this thing going!
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Michelle B
Keith Current
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Tutor the Barbarian
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Aaron Knows DIY
G. Salazar
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Marc B.
Richard B.
Ben. K
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Traditional hand planesâthe kind with a movable frogâneed a sharp blade and a smooth sole to function properly. Once both of those are tuned in, thereâs another critical area to focus on: the mouth opening.
The space between the blade and the front of the mouth determines how well the shaving escapesâand how much support the wood fibers get during the cut. Open the mouth too wide, and youâll risk tear-out. Too tight, and the shavings will jam or the blade wonât bite at all.
But donât assume thereâs a one-size-fits-all setting. For heavy stock removal, a wide opening helps thick shavings exit cleanly. For fine smoothing, a tight mouth helps reduce tear-out by supporting the fibers right before theyâre sliced.
Thatâs exactly why the frog is adjustable.
Remove the blade and chip breaker, and youâll see two screws at the top of the frog. Loosen those, and depending on your plane, the frog may slide freelyâor use a rear adjustment screw to fine-tune its position forward or back.
Youâll need to experiment to find the right feel. But generally, a mouth opening around 1/16â is ideal for fine smoothing, while something closer to 1/8â works better for rougher cuts.
Once set, lock the frog downâand enjoy the control it gives you over every pass.
Besides this, the chip breaker needs to be set just right, since it works with the mouth opening to control tear-out.
Check out my other channel! â @makethingswithrob
Become a patron! â patreon.com/makethings â
Huge thank you to my patrons that keep this thing going!
*MAKER TEAM*
Michelle B
Keith Current
William L McNally
Rich Lightfoot
Tutor the Barbarian
Aubrey G.
Nukebert
Sam W.
Aaron Knows DIY
G. Salazar
David B.
Marc B.
Richard B.
Ben. K
Make Things
#MakeThings #mtbitesize
