Ask the Expert
What is the reason for sanding wood?
Wood sanding is done to prepare the surface for treatment such as staining and lacquering.
What is considered a well prepared wood surface for staining?
A well prepared wood surface is one that has been sanded to remove all wood fibers and open up the grain of the wood. This allows the stain to penetrate ensuring a deep uniform finish. Uneeda’s products ensure consistent wood fiber removal by using only the sharpest grains that will consistently shave off the wood fibers and not compress them.
What is the correct grit sequence to use on a wide belt sander?
First you must decide what grit you want to finish with and then work backwards taking into account how much total material you are looking to remove. You should not skip more than one grit in any sequence to optimize abrasive life and ensure the highest quality finish.
How do I know if I am maximizing my abrasive life?
Abrasive life is a function of what type of material you are sanding, machine condition, environment, and grit sequence.
Should I clean abrasive belts?
Cleaning of abrasive belts is only recommended when soft materials such as pine are being sanded. These materials tend to load abrasive belts prematurely and once cleaned, will still perform well. It is not recommended to clean belts that have been used on hard materials such as oak and cherry because once these belts are worn down they cannot be re-sharpened after cleaning.
Why do I sometimes get swirl marks or fish eyes when disc sanding with a pneumatic random orbital sander?
Swirl marks, also called fish eyes, are usually a result of insufficient air pressure into the sander causing the sander to slow down. Random Orbital sanders should run with a minimum of 10,000 RPM. Any slower and swirl marks may appear. The incorrect grit for a particular application may also cause swirl marks.
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