How to make a paint sprayer gun

Written by marshal m. rosenthal
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How to make a paint sprayer gun
A paint sprayer gun works better than a brush. (Paint brush and aqua paints image by PaulPaladin from Fotolia.com)

Painting a wall or any large surface with a brush opens the door to an uneven application of paint. A paint spray gun will provide a coat of paint to the surface in a more even pattern and with less dripping compared to a brush. You can make your own paint sprayer gun from a few hardware parts and some tools found in most households. You do not need experience in mechanical engineering to make a paint spray gun, but those who are underage should not make it without adult supervision.

Skill level:
Moderately Challenging

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Things you need

  • Newspaper
  • Air blow gun
  • Pipe tubing adaptor, 1/8 inch
  • Wide brass rod, 4 inch long, 1/2-inch wide
  • Wide locknut, 1/2 inch
  • Wide washer, 1/2 inch
  • Portable drill
  • Wide drill bit, 1/2 inch
  • Quart glass jar
  • Teflon sheet, 1/16 inch
  • Utility knife
  • White glue
  • Bonding glue
  • Pencil

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Instructions

  1. 1

    Cover a table with newspaper. Put the lid of the quart glass jar down on the newspaper with the inner side facing up. Insert the tip of the utility knife beneath the cardboard inside of the lid. Wiggle the cardboard free. Remove the cardboard from out of the lid.

  2. 2

    Drill a hole in the centre of the lid with the portable drill.

  3. 3

    Put the Teflon sheet on the newspaper. Place the cardboard down on the sheet. Draw around the cardboard with the pencil.

  4. 4

    Cut out the drawing on the Teflon sheet with the utility knife. Apply white glue to one side.

  5. 5

    Insert the cut out piece of Teflon sheet glue side first into the lid of the quart glass jar in place of the cardboard that was removed.

  6. 6

    Place the tube end of the pipe tubing adaptor over the nozzle of the air blow gun. Apply bonding glue around the seam. Let the bonding glue set for a day.

  7. 7

    Slip the compression spring over the pipe end of the pipe tubing adaptor.

  8. 8

    Insert the brass tube into the hole in the lid with the top of the lid facing up. Slip a washer over the brass tube from the bottom. Screw a lug nut onto the brass rube from the bottom.

  9. 9

    Slip the pipe end of the pipe tubing adaptor into the brass rod. Apply bonding glue around the seam. Let the bonding glue set for a day.

Tips and warnings

  • Wear goggles when using your paint spray gun.
  • Too much air pressure from the compressor can disrupt the seal of the paint spray gun.

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