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King Arthur's Tools 11341
Item 147535

King Arthur Inflatable Round Sander


The Guinevere Inflatable Sanders are pumped up through an air inlet in the drive shaft located in the bottom of each sander. The air valve design leaves the bottom flat without a clumsy protruding...

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The Guinevere Inflatable Sanders are pumped up through an air inlet in the drive shaft located in the bottom of each sander. The air valve design leaves the bottom flat without a clumsy protruding valve on the sanders. This patented solution made it possible to make superior cylindrical drum sanders as well as a unique rounded sander with a Round shape at the business end. This molded rubber bulb constantly flexes and changes shape, making the sanders soft all the way to the edge

  • With the choice of four (4) grits from coarse to extra fine
  • Eliminates scratches
  • Use only the edge in all kinds of complex sanding
  • Sander fits flat when pressed against a flat surface
  • Sanders conform to the underlying surface



3.13 out of 5 stars
8 Reviews
  1. 4.0 out of 5 stars
    by on

    Works well when inflated with compressor

    I struggled to adequately inflate the bulb with the supplied hand air pump. When underinflated, the sandpaper sleeves don't stay in place. Ultimately I took the rubber seal out of the hand pump and used an air gun with a tapered nozzle on my compressor with a pressure reducer at 20-25 lbs pressure. That works great, with reliable and quick inflation of the bulb. When properly inflated the sander works very well to sand bowls - much better than any other system I've tried. It would be better if the cost of the sanding sleeves was a bit less.

  2. 2.0 out of 5 stars
    by on

    Overpriced and unreliable

    My interest was to obtain a smooth finish in spoon bowls and similar locations. The apparatus is unreasonably expensive (>$40 for a rubber bulb with a nozzle) and the sandpaper fittings at >$4 apiece are unreasonable. The little $12 pump for inflating is far too much money for what one gets and the bulb will not stay inflated for long. When this works the results are very good but the time I have spent trying to make it work properly hardly makes sense. I am not sure who would pay over $250 for the motor plus attachments, but at least I know better than to go that far.

  3. 4.0 out of 5 stars
    by on

    Good product for bowl sanding.

    I've been using this inflatable sander for a couple years now. I find it works well on small bowls turned on my midi lathe. It takes a little practice to get the washers lined up for assembly, but I've not had much trouble. It has never deflated unintentionally (unless overinflated). In use, care needs to be taken to avoid excessive heat, but using the correct grit usually minimizes the sanding time and temperature. I haven't tried any other sanding systems because this one has always worked for me. I'm going to check into the buffing system as well.

  4. 3.0 out of 5 stars
    by on

    Sandpaper comes off

    It would be great if the ball would stay inflated. The paper keeps sliding off, even when I give it two pumps. Perhaps because of this, the sandpaper comes apart in the operation. Overprices, so not sure I would recommend.

  5. 3.0 out of 5 stars
    by on

    Great concept

    Concept is great but difficult to expand with sandpaper on.

  6. 4.0 out of 5 stars
    by on

    Gets to the bottom of the Spoon

    The round sander is ideal for getting into the bowl of the spoon and is perfect for sanding out those home made bowls. Gets into the round edges and produces a perfect finish with the sanding bonnets. The round sanding head does not have a deflating vent which causes a bit more time when reinflating the bulb.

  7. 4.0 out of 5 stars
    by on

    Works great!

    I purchased this when a fellow shopper in the store advised me it was a good way to sand concave radii. I do understand what the reviewer above may be going through, as the rubber could use a better lip to hold the metal shank centered. If centered it's about half a pump to hold the sanding cup.

  8. 1.0 out of 5 stars
    by on


    I have difficulty sealing the dome, even though it gives visual appearance of being properly centered and seated. There is no apparent damage to the rubber, and I have cleaned it, so I am not sure just why it is so difficult to inflate it enough to hold the sanding cap on. Like so many others, I seem to be on an endless search for a good solution to lathe sanding problems, Sigh.

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