Is wood glue safe on the jointer?

Having discovered that plywood glue damages jointer knives, and already having nicked my knives, I figured I might as well investigate whether regular wood glue or end grain will damage jointer knives

Category:

Howto & Style

Tags:

• wood
• jointer
• sharp
• cutting
• woowork
• knives

[photodeus]

How long did the glue dry for? A full day? Would it make a difference if you try it again now that it has really dried.

[Matthiaswandel]

I'm pretty sure it was fully dried after a day - pretty dry around here.

Used up the whole test piece in my tests, so can't re-test.

[Mauser712]

I see a Jointer-blade sharpening machine in your future.

[phonebluejob]

they have jointer knives that are made just for plywood

[jeffy104]

Sweet!

[wobblycogsyt]

I recently had my planner knives resharpened in order to work on some kiln dried European oak. First piece through had a 25mm knot in the centre of the board which took an equally sized lump out of the edge of all three blades. I may have sworn once or twice at that point.

[Larenzoid]

Thanks for the info, Matt.

[rexstallion]

The glues used in producing Baltic birch plywood are Urea for interior use and a Phenol resin for exterior use .Crossbanding in the plywood and the hard setting glues are hard on HSS knives. If you must joint plywood,use the outermost edges of your knives and save the center for cleaner work.

[TheTricky38]

I have had the same issue with big box store plywood but none on the expensive baltic birch (woodcraft). wonder if the chinese glue process/product Home Depot buys is contact adhesive type?

[68jacen]

I'm still not sold on the idea of epoxy. It may be wothwhile to tackle it. Since it's soo hard it maybe brittle and crack easily. It would make an interesting video.

[scarmenl]

Your best bet with painted wood is a carbide lipped scraper.