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by Procheta Mallik

Introduction

Draw a silk thread from the silkworm cocoon provided. Dye the silk using Haldi and kum-kum or other natural dyes.

    • Exercise caution while handling scissors/Cutters.

    • Don't touch any hot object with bare hands

  1. Card sheet dimensions are 15 cm x 15 cm.
    • Card sheet dimensions are 15 cm x 15 cm.

    • Make two slits of length 4 cm. The slits need to be 6 cm apart.

    • Take another card sheet around 4 cm x 30 cm. Pass it through the two slits as shown in the image.

    • Add two ice cream sticks using tape to make the card sheet stand firm.

    • Wrap another card sheet strip around the stands to prevent it from bending backwards and fasten it using tape

    • Draw two diagonals on 3 cm x 3 cm square card sheet strips and put put dots at distance of 1 cm from each corner

    • Make a hole in the middle of each card sheet strip equal and make sure the straw fits tightly in that.

    • Cut the wooden skewer into four equal parts

    • Insert the already cut four wooden skewers through the dots marked on the small square card sheet strips.

    • Glue the wooden skewers with card sheet.

    • Make holes near the top portion of the stand slightly more than the diameter of the straw.

    • Insert the thick wire through stiff pipe until 2 cm of wire is remaining outside.

    • Bend the wire about the point where it is coming out of the pipe.

    • Take 3 cm more of thick wire out from pipe and make a bend of 90 degrees int he direction of first.

    • All bend portion should be in one plane

    • insert the shortest end of the wire across the cross section straw at a distance of 2 cm to 3 cm from one end

    • Tape the straw and inserted portion of wire together.

    • Insert the handle through holes in stand and reel and you end up making a crank.

    • Make a square cut in the base card sheet of the crank.

    • Take thin wire and make u shape in the middle

    • Keep the convex side of the U- shape portion of wire towards crank inside the cut portion

    • Tape the wire to fasten it with the card sheet.

    • Boil the cocoons for five minutes and make sure while they are floating, the whole surface becomes wet.

    • keep the crank above the level of boiling pan using any stand.

    • Rub the brush over cocoons and gently gradually raise the brush along with the silk thread strands.

    • Keep the water warm for the whole time duration. Don't try to touch the cocoons with bare hands.

    • cut out initial five to six metres of thread(surface layer silk thread is of very poor quality).

    • Don't let other part of thread fall back into the pan

    • After cutting some portion start pulling the thread and pass it through the converger installed in crank up to the reel.

    • Wind initial few turns with hands around the reel and then start rotating the handle to take more thread

    • Converger will convert all strands into one thick strand.

    • Rotate the handle gently to prevent the thread from breaking.

    • You are now a silk thread manufacturer!

    • Reel not rotating with handle. Size of the holes more than the diameter of straw.

    • Silk thread strands breaking off in between. Make sure water is warm throughout the process of taking silk thread from cocoons

    • Pluck the silk thread strands without boiling the cocoons. Observe and record here the difference (if any) as compared to boiling water.

    • Hang a bucket on the silk thread you have made. Now tie and hang the bucket on a door handle which looks strong. Pour measured quantities of water in the bucket till the thread breaks.

      • The above exercise will help you measure the strength of the thread you made. Vary the number of strands you include in one thread and compare the effect on the strength of the thread.

    • What is the average number of individual strands in a silk thread used in making apparels.

    • Do you notice any translation of motion happening while taking up silk thread up using crank?

    • It seems as if the cocoon is solid shell like a normal egg? Try to find it out by removing the whole thread from cocoons

Finish Line

Suhail Ahanger

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