The key here is to make sure the sawdust is from the wood project you are currently working on so the color.
Filling 4x8 sheet gaps with wood glue.
While it s best to fill any voids prior to attaching pieces of plywood together you can fill voids between plywood sheets with wood filler.
Instead use sections of rope.
Combining sheets of plywood makes the wood project more durable.
They re expensive and hard to sand after being fully cured.
If the gap filled portion will be stressed use epoxy.
Unless you need to fill a gap titebond iii is the better choice.
If you re simply filling a gap with no strength required use gorilla glue.
As to filling the gaps don t use some sort of wood filler.
Rub the sides of the sliver on sandpaper until it fits the width of the gap perfectly.
Sands easily and dries fast.
However many woodworkers carve a plug or wedge from a solid piece of wood slightly smaller than the divot they are attempting to repair glue the plug or wedge in place and then use wood filler to fill the remaining void.
It s easier to work with especially on wood to wood gluing.
Choose that option when the void is large enough and regular in shape like the one shown here.
Everybody who has tried to make some woodworking knows the frustration that occurs if some pieces leave a huge gap between them when assembled or on the contrary are too tight to fit together.
Wood filler can be used to fill gaps up to an inch wide and an inch deep.
By combining equal parts sawdust and white wood glue it forms a paste that can be used to fill holes.
A smooth cotton rope stuffed into the gap loaded with carpenters glue will stick very well.
6 sawdust with wood glue.
Force glue into the opening with a knife or a piece of paper then slip the filler into place.
First fill the gap with a small amount of wood glue then rub sawdust into the gap.
Use a chisel to take a sliver from another piece of matching wood making it deeper than the gap.
Diy wood filler.
This is the traditional way of creating wood fillers.
The new polyurethane hot melt adhesives offer reliable strength and set up almost instantly.
Not only will it be expensive but you will find it will crack out in just about a year due to the seasonal movements of the old floor boards.
Voids in plywood are simply large holes that occur naturally in the surface of the wood.
The last case results usually with a piece too big cut.