Light Screen: Difference between revisions

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Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube- position tolerance +/- 3mm (1/8"). Use a measuring tool to ensure perpendicularity of vertical tube to ground tube. Make 2 tack welds on each of the 2 side edges between the ground tube and vertical tube. Remeasure perpendicularity. Tack the top and bottom edges. Perform full weld.
Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube- position tolerance +/- 3mm (1/8"). Use a measuring tool to ensure perpendicularity of vertical tube to ground tube. Make 2 tack welds on each of the 2 side edges between the ground tube and vertical tube. Remeasure perpendicularity. Tack the top and bottom edges. Perform full weld.


[[File: sqtubelaid.jpg|100x100px]] [[File: sqtubelaid2.jpg|100x100px]] [[File: sqtubetacked.jpg|100x100px]] [[File: sqtubetacked2.jpg|100x100px]] [[File: sqtubeclamped.jpg|100x100px]] [[File: sqtubewelded.jpg|100x100px]]
[[File: sqtubelaid.jpg|100x100px]] [[File: sqtubelaid2.jpg|100x100px]] [[File: sqtubetacked.jpg|100x100px]] [[File: sqtubetacked2.jpg|100x100px]] [[File: sqtubeclamped.jpg|100x100px]] [[File: sqtubewelded.jpg|100x100px]] [[File: Tframescomplete.jpg|100x100px]]


Lay the T-frames flat on a table with the short tube vertical off the side of the table. Lay the long tubes perpendicular to the T-frames. Check with a speed square. Tack weld and weld.
Lay the T-frames flat on a table with the short tube vertical off the side of the table. Lay the long tubes perpendicular to the T-frames. Check with a speed square. Tack weld and weld.

Revision as of 06:43, 13 October 2012

Introduction

Lightscreen.jpg

Design

Use rectangular-ish frame made of 4 square tubes welded at the corners.

Use small C-clamps to hold light curtain to frame.

Weld 2 additional long square tubes at the bottom corners for standing support parallel to the ground surface but perpendicular to the frame plane.

Mount 4 castors near the ends of the long square tubes for mobility.


Materials

14gauge x 2" x 2" steel square tube of following lengths:

60cm x2 as ground tubes - drill a hole for mounting the castors 3cm from ends, 1" from width.

180cm x2 as vertical tubes - to be welded to the middle of the ground tubes

100cm x2 as horizontal tubes - to be welded to the top and bottom of the vertical tubes

4 castors (single bolt mounting style)

180cm x 100cm area translucent UV/IR protection screen

3" opening C-Clamp x6

Steps

Steel square tubes! 1" x 1" square, 14 gauge thickness (approx 0.06" or 1.6mm). Cut to lengths: 3' x2, 4' x2, 6' x2

Steelsqtubes.jpg

Lay the ground tubes and vertical tubes on a flat working surface. Position the tubes for welding- the vertical tube should be at the middle of the ground tube- position tolerance +/- 3mm (1/8"). Use a measuring tool to ensure perpendicularity of vertical tube to ground tube. Make 2 tack welds on each of the 2 side edges between the ground tube and vertical tube. Remeasure perpendicularity. Tack the top and bottom edges. Perform full weld.

Sqtubelaid.jpg Sqtubelaid2.jpg Sqtubetacked.jpg Sqtubetacked2.jpg Sqtubeclamped.jpg Sqtubewelded.jpg Tframescomplete.jpg

Lay the T-frames flat on a table with the short tube vertical off the side of the table. Lay the long tubes perpendicular to the T-frames. Check with a speed square. Tack weld and weld.

Tframelaid.jpg Longtubelaid.jpg File:Longtubetacked.jpg Longtubewelded.jpg

Cover the rectangular frame with the protection screen and mount with 4 C-Clamps at the corners and 2 C-Clamps at the middle of the top and bottom horizontals (warning: make sure that the non-rotating end of the C-Clamp is compressing the screen- otherwise the compressed rotation can damage the screen)

Screenclamped.jpg File:Screenclampcloseup.jpg

Drill the castor holes on the ground tubes. Position tolerance: +/- 3mm (1/8"). Install the castors

Raise the light screen to its functional orientation.

Resources

Transparent Welding Curtains