Light Screen

From Open Source Ecology
Jump to navigation Jump to search

Introduction

Lightscreen2.jpg

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 1" x 1" steel square tube of following lengths:

90cm x2 as ground tubes - drill a hole for mounting the castors 3cm from ends, 1" from width.

150cm 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

Straightforward Steps

Lay a 4' and 6' tubes like a rectangle on a table, the 6' enclosing the 4'

Speed square and magnetic-hold the corners, tack weld, then weld the connections

Clamp (C-Clamp) a 3' tube vertically (check with speed square) at the edge of the table

Move the rectangular frame into the vertical tube, tack weld and weld.

Clamp and weld the other 3' tube similarly.

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 Tframecheck.jpg Longtubelaid.jpg Longtubesquarecheck.jpg File:Longtubetacked.jpg Longtubewelded.jpg Longtubewelded2.jpg Longtubewelded3.jpg

Mount the T-frame and super T-frame vertically to the side of a table. clamp the horizontal tubes to the lone T-frame and tack weld + weld.

Supertframesmounted.jpg Supertframeslengthcheck.jpg Supertframessquarecheck.jpg Supertframesclamp.jpg Supertframesclamp2.jpg Supertframeshorizmount.jpg Superframecomplete.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 Screenedsuperframecomplete.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