Double Trouble.
- Thread starter Scott B.
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Wax on, wax off? [blink]
Moving through the grits at record pace? [huh]
Dueling sanders? [unsure]
Moving through the grits at record pace? [huh]
Dueling sanders? [unsure]
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Shane Holland said:
One grit, two pass. Its garden variety mill glaze removal in prep for clear spraying. Problem is the 4000lf of material.
We started with 5" ets and decided to conduct a study on the production differences between 5" and 6" on 7" boards. This just accelerated the process. Whatever it takes to get to the act of spraying sooner.
Wood_Junkie
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I'd like more pictures of your Festool themed drying rack tucked to the side. You couldn't be showing your addict colors more truly. [wink]
Here ya' go for the drying rack http://festoolownersgroup.com/finishing/erecta-rack-drying-rack/
Seth
Seth
ccarrolladams
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Kev said:
Hi Kev and Everyone,
Your suggestion can be made to work. For years many firms perfected wide belt sanders for production applications.
These days the trend is to use production machines which replace the single wide belt with many random orbit sanders arranged to overlap, but all at the same plane. Try to picture 16 or more ETS150/3 in two staggered rows.
Or, come to AWFS 2013 in Las Vegas, Nevada in late July. Several competitive multi-head RO sanding systems are expected to be demonstrated.
As others have said, even the most expensive top quality sheet material will have that pesky mill-glaze. Like virtually all the large-scale cabinet makers I know, I own a 2010 vintage wide belt sanding system which is very useful processing product made from solid wood, such as glued-up door panels. Removing mill-glaze was for ages considered a task best done by skilled cabinet makers using RO sanders such as the ETS150/ 5 or 3.
I remember times when I looked forward to de-glazing a few pieces each day where either both side of the plywood would be seen, or I needed to pre-finish parts made from exotic veneer to bring out the beauty of the grain and get the part ready for spraying and drying before the shelf-pin holes were drilled. Trust me, on those days when so many such parts needed to be built the joy of doing the sanding ended.
It is sort of like making dovetail drawer joints. If you have all the time in the world to produce 15 drawers for your own kitchen using a router or two with cunning jigs can be a joy. But on those days you need 120 drawers, each of which will be judged on its own by critical clients, then the cost of an Alexander Dodds CNC drawer dovetailing machine looks like a wise investment, with one of their clamping machines ensuring all the drawers are square. Similarly, when making a few cabinet doors a few clamps can get the job done. But when you need a lot of doors on the same day, one of the dedicated electro-pneumatic production door clamp systems becomes attractive.
Scott- love the photo!
CCarroladams- I wonder, what is mill glaze? Over some years of on and off work making cabinetry, I have almost always used veneer core plywood, and find the top sheets to be problematic. Too thin, parallel mill marks, etc., and am still trying to learn more about the sanding and finishing process. These days I go very light on the RO sanding as the top sheets are so thin and I want to avoid sanding through...
CCarroladams- I wonder, what is mill glaze? Over some years of on and off work making cabinetry, I have almost always used veneer core plywood, and find the top sheets to be problematic. Too thin, parallel mill marks, etc., and am still trying to learn more about the sanding and finishing process. These days I go very light on the RO sanding as the top sheets are so thin and I want to avoid sanding through...
ccarrolladams
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As I use the term 'Mill Glaze' is scum on the surface of sheet material which interferes with finishing.
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Thanks pc and cc
Mill glaze in the painters world is slight polished sheen from the cutters when the wood was milled. The planing process closes down the grain and smooths it off, leaving a glaze. This messes with finishes. When painting, we at least scuff it for adhesion, and when doing stain or clear (as was the case here) we remove it completely for both visual and penetration reasons. We shot video of spraying clear on the batch of pine in the above photo, sprayed it with a Kremlin Airmix and it laid nice and evenly.
Mill glaze in the painters world is slight polished sheen from the cutters when the wood was milled. The planing process closes down the grain and smooths it off, leaving a glaze. This messes with finishes. When painting, we at least scuff it for adhesion, and when doing stain or clear (as was the case here) we remove it completely for both visual and penetration reasons. We shot video of spraying clear on the batch of pine in the above photo, sprayed it with a Kremlin Airmix and it laid nice and evenly.
