Brush Sanding

Hello,

Hope everyone's week went well. I had a very interesting week dealing with 2 brush sanding applications. Both companies had just recently bought a brush sanders.

They both brought me in to get the machines to work for their application. This application turned out to be the same one. They are both making cabinet doors from MDF, brush sanding them, and then pressing them.

One company actually wants to use the same brush sander to sand the MDF, "denib" the glue after it is applied, and then remove the glue overspray from the back of the door. The other owns a Gottschild machine for removing the glue and doesn't need or doesn't want to denib the glue.

The problem both are having is that they thought they couldn't get the tool marks out from their router. One was a KOMO, and one an Onsrud. Coincidentally, they both use a brand of MDF from Flakeboard out of Canada called Superior Plus.

What I saw from the product though was not tool marks, but rather core tear out from the tooling. There is no way a brush sander can remove these marks without obliterating the corners and edges. See picture:

This is a tooling issue, not a sanding issue. Our next step here is to bring in a router tooling expert to work with me on getting perfect product to their membrane presses. The most important thing to remember about a brush sander is that it is for scratch pattern, not stock removal.

Please check out the video from my friends at Flex Trim on my Facebook page. The link is on the right.

Please let me know if there is anything I can help you with.

Have a great week.