SCREWDRIVER UNIT

 

   EXPERIENCES
         Hack sawing 
         Neutral and carbonizing flames 
         Drop forging 
         Grinding 
         Hardening tool steel 
         Tempering tool steel 
         Glass bead blasting 
         Dye penetrant testing for cracks 
         Casting Water Extended Polyester 
         Sanding Water Extended Polyester 
         Polyurethane finish 
         Gelled stain
      UNDER DEVELOPMENT:  We are very close to 
          having the Phillips screwdriver ready.  One school

          is making it using a mill/lathe unit. Another school 

          should soon be testing the fixture using a CNC mill

          A square end can be made using a mill.  A special

          fixture is required.  By using a second  mold,

          Estimated time to make the two screwdrivers is

         4 hours.   Contact me for details.

ESTIMATED TIME
3 HOURS















 

 

 

 

REQUIRED ITEMS
    1.  The PARKE System, Special tools and manuals available only from Parke.
    2.  STANDARD TOOLS,  available from traditional sources.
    3.  MATERIALS, hard to get items are available from Parke, others from traditional sources.
   

PRICES FOB SPRINGFIELD, MO

SUBJECT TO CHANGE WITHOUT NOTICE
 

  COMMENTS ON ORDERING:
         You will not need more than one sandblaster per lab.  A wire brush on a bench grinder can be used in place of the sandblaster, but do not allow the students to use it.  If you are not careful the wheel will catch the part and throw it. 
 

The Parke System

 For a picture of the item click on the beside the item

 1

  Drop forge 

$500.00 

 1 

  Template 

 $6.00  

1

  Mold 

 $100.00  

1

  Mixer 

$8.00 

 4 

  Manuals  @   $20.00 each  10.00

$80.00 

 

 

TOTAL    

$694.00  

220.00

 

ADDITIONAL

 

 

 

  Extra molds  (1 per 15) 

$100.00 

 

 

  Extra stops for drop forge

$5.00  

 

 

 

 

STANDARD TOOLS

Metalworking vise 

1 per lab 

 

 Hacksaw 

1 per lab 

 

Rule 

1 per lab 

 

7/16" box end wrench 

1 per lab 

 

Oxygen acetylene torch unit 

1 per lab 

 

Large parallel hand screw clamp 

1 per lab 

 

Ball peen hammer 

1 per lab 

 

Scriber 

1 per lab 

 

Bench grinder 

1 per lab 

 

#10 screw, reusable 

1 per lab 

 

File 

1 per lab 

 

Oven, up to 500F 

1 per lab 

SOURCE 12 

Gloves for handling hot materials

1 pair per lab

 

Compressed air 

1 per lab 

 

Eye dropper 

1 per lab 

SOURCE 2 

Drill press 

1 per lab 

 

Screwdriver 

1 per lab 

 

Oily waste container 

1 per lab 

 

 

 

 

 MATERIALS

ITEM

UNIT

PER
STUDENT

PARKE
PRICE

SOURCE

 1/4" Dia. tool steel, 4140 annealed

each

1

54 cents

Parke

 Tempilaq 

bottle

.015

N/A

1

 Thinner for Tempilaq

bottle

.015

$12.00

Parke

  Layout dye, NOTE: A wide, black, or blue,
       felt tip pen works just as well.

can

1 per lab

 

 

  Paper towels 

 

 

 

 

  Dye Penetrant test kit:
    One each of cleaner, penetrant and developer

kit

1 per lab

 

10

  9 oz. paper cups, See note below 

each

1

 

2

  Water Extended Polyester resin 
    and catalyst 
  See note below about WEP catalyst

ounce

1 1/2

 

2

  Chemically inert gloves for use
     with WEP and catalyst

 

 

 

 

  120 grit abrasive paper 

sheet

1/8*

 

 

  Gelled stain 

quart

1 per lab

 

15

  Newspapers

 

 

 

 

  Stirring stick

each

1

 

2

  Steel wool, 000

 

 

 

 

  Urethane finish, water soluble preferred 

quart

1 per lab

 

 

  Solvent to clean urethane brushes 

 

 

 

 

  Glass beads for sandblaster

bag

1 per lab

$49.00

 

* VARIES WITH STUDENT WASTE

NOTE:  These used to come in a bundle of twenty 20 inch lengths.  Now they are 6.5 inch long, just what each student needs

NOTE ABOUT CUPS:

The manual calls for measuring 1 ounces by volume of WEP into a marked cup.  The marked cups are more expensive than unmarked cups and are hard to find.   You can use 9 ounce non-marked cups and a postage scale to get the amount needed.  Put the cup on the scale, weigh the cup and add 1 ounces of WEP into the cup.  Interestingly the volume and weight are the same.

NOTE ABOUT WEP CATALYST

Water Extended Polyester (WEP) resin is a Polyester resin that has a chemical added which allows water to be added to mixture.  The characteristics of the final product are different and the cost per screwdriver is less.

The WEP catalyst has a different chemical content.  Using regular polyester catalyst to make the screwdriver will work.  There will be some difference in shrinkage, but you probably cannot tell the difference. 

POSSIBLE SOURCES
    I have no connection with these sources.  There are other sources,
    these are just where we purchased ours.

SOURCE 1 Master Carr 1-800-645-7270 Part #60798527

SOURCE 2
    IASCO,
    5724 West 36th Street
    Minneapolis, MN  55416
    1-888-919-0899

SOURCE 10
    "Welding Equipment and Supplies"
     in Yellow  pages of phone book.

SOURCE 12
   The best and most economical oven is an electric
    kitchen range.  Several schools have let it be
    known they needed one and some parents
    donated a good use one to the school.  To buy
    a  new one look under "Electric Appliances, Major"
    in Yellow pages of phone book.

SOURCE 15
  Many paint stores do not keep gelled stains.  Try  a
  discount store that handles painting supplies.   Formby's
  brand has a gelled stain, but it is rather expensive.
 
 

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