I personally would use a 1 part poly to 1, 2 or 3 parts naptha and apply with a lint free cloth (old tee shirt type material).  I use a 1 part to 2 part ratio mostly but vary depending on horizontal vs vertical and material being varnished.  It will take twice (or more) coats but no bubbles or runs and can recoat up to 4 times a day.

As the infrared images reveal, the difference in the operating temperature of precisely aligned equipment (top photo) and unaligned equipment (bottom photo) is readily apparent.

I will be the first to say I don't spray, but I have read that spraying poly without a booth is not real good because of the slow drying time and the spray being everywhere.Gretchen

Can youapply water basedpolyurethane with a roller

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Can you use a roller with polyurethaneon wood

The user-friendly display unit is operated by just four buttons (plus the on/off button). Figures, numbers and logical symbols on the easy to read LCD screen guide the user towards a perfect alignment. There are no complicated menus to learn, minimizing training requirements.

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Studies have shown that more than 50% of all excessive machinery vibration is caused by misalignment. Excessive vibration causes energy loss, bearing failures, and unexpected repairs. Precision alignment is proven to deliver significant savings in electricity, machine repair and downtime.

I should also tell you that I have never tried it.  If it was me, I would just use the finish, skip the Armor All, and go windsurfing.

I have several MDF garage cabinet doors I want to coat with polyurethane.  Will one the foam rollers work?  I have a lot of surface to cover so any suggestions is welcomed.

Foamrollerforpolyurethane

Can I jump in with a question?  Looking to install 3/4" T&G pine on ceiling.  Want to leave with natural look and considering a poly finish but I am concerned about it yellowing.  Any suggestions about how I should finish it (product and technique)

You might try General Finishes Polyacrylic Satin.  It is basically, for purposes of a general explanation, a water based polyurethane finish.

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The system is based on traditional dial indicator methods. The Shaft Hog, however, applies advanced laser technology to eliminate:

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A quick way to apply it is to roll it on with a foam roller (I think the ones that West System sells are the best), then tip it with a foam brush.  After drying, it only takes a bit of light sanding with a fine foam sandpaper block, a second coat of finish, and it will be perfect.

Shaft Hog uses dual laser transmitter/detector units that display measurement results with a resolution of 0.0001 inches! The extreme accuracy of laser alignment achieved with Shaft Hog leads to direct cost savings.

The Shaft Hog alignment tool displays live values right on-screen that show the user exactly where the machine to be aligned is sitting relative to perfect alignment. The user isn't required to perform complicated calculations. Instead, you spend your time performing precision alignment, not remembering equations or complicated routines.

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Any water based poly will yellow less than its oil based cousin. I would finish all the boards before installation. WB poly sprays very well, but if you don't have a spray set-up, brushing will work too.******************************************************** "It is what we learn after we think we know it all, that counts."

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How to rollpolyurethanewithout bubbles

If you thin it as I suggested, definitely use it was a wiping varnish.  Put it on with a soft lint free rag.  Only sand very lightly after the last one or two coats.  It may take upwards of 6 to 8 coats to build up to a sufficient thickness.  The beauty of a wiping stain is that the naptha (or mineral spirits per some finishers) is that the thinner (naptha in my case) flashes off and you can effectively recoat within a couple of hours depending on temperature and humidity.

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Unfortunately, the wood will gain some patina on its own, no mater what you do.  I have heard that if Pauduk (probably the wood that changes color more than just about any other) is coated with Armor All, the change in color is slowed considerably.  I would apply the finish, then the Armor All.  Yes, I am talking about the stuff you put on your tires and car interior to stop the sun from fading the interior.  I guess it has a lot of UV protection.

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******************************************************** "It is what we learn after we think we know it all, that counts."

I use polyurethane brushes all the time when applying poly, and years ago I seem to remember using foam rollers. I wouldn't hesitate to try what you're suggesting, but I would keep a brush handy in case the finish needs to be brushed out.

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The Shaft Hog shaft alignment tool comes with all the hardware and tools you need to begin doing alignments as soon as you open the carrying case. Anodized aluminum chain brackets fit a wide range of shaft diameters. The chains can be easily extended to accommodate virtually any shaft.

The Shaft Hog shaft alignment tool has been designed to let you concentrate your skill and effort on performing precision alignments, not on figuring out how to use the instrument.