STEAM Camp Materials

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Tools from Harbor Freight

Closest Harbor Freight to Open Source Ecology is St. Joseph, MO. - $483

  1. [2] Abrasive metal cutoff saw - [1] - $99
  2. [2] 5A grinder - [2] - $20
  3. [2] 11A grinder - [3] - $45
  4. [2] 15A grinder - [4] - $63
  5. [2] Buffing wheel - [5] - $6
  6. [2] Wire wheel - [https://www.harborfreight.com/3-in-wire-wheel-with-14-in-shank-60317.html - $2.5
  7. [2] Cup brush wheel - [6] - $2
  8. [4] 3 pack weldding gloves - [7] - $10
  9. [1] 10 pack of hacksaw blades - [8] - $6

3D Printers

  • 2 people have reserved printers
  • We currently have 2-3 printers ready for printing parts, so we need 6 more minimum.
  • We have 14 people registered. It makes most sense to build 7 printers in the first 4 days - via a perfected workflow.
  • If we have 10 printers printing - we can print parts for the 2" universal Axis. Basic ergonomics:
  • Now the question is can we print a sufficient number of parts for 7 3D Printers
  • Start with D3D v19.06 BOM, then inventory - and start printing.

Working Doc

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Overall

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=Food Receipts

=Food Receipts

Overall

  1. 6/12/19 - 40 GT2 pulleys, 15 mm wide
  2. 6/3/19 - 105 meters (21x5)of GT2 belt, 15 mm, added to order - [9]. Tracking - https://www.dhl.com/en/express/tracking.html?AWB=4056587496&brand=DHL]. Used in both 1" and 2" Universal Axis system.
  3. 10 SSRs - [10] (5 packs of 2)

2" Axis

From the BOM, we have -

BOM

  • Axes - 32' total (8 rods of 3', 4 rods of 2' for z) - $640
  • Frame - 1/2"x6"x6" angle -$20/ft; 4x4x1/2 tube - $30/ft - 36 ' - $720 or $1080. Use flts to make 6-sided space frame per OSE industry standards
  • Oil-impregnated 2" bushing - 8000 lb+ lateral force capacity- $9.41 - [11]. $240. 24 needed, 18 minimum. 2" is huge and weighs about 1 lb each if naval bronze acc to Metal Weight Calculator.
  • Belts - see GT2_Belts#Belt_Drive_Cost - $12/foot x6 = under $100.
  • Motors - 6 Geared Down Stepper Motors at $30 each -

Precision Drive

  • 3D printed belt for low cost precision - needs development
  • Multiple 15 mm GT2 Belts
  • $25/meter for ball screw only -
  • 1" ball screw set - $200/2 meter with complete set - [12]
  • $25/foot
  • .6" ball screw complete set, 2 foot travel - $50/foot
  • $5/foot for 1" acme screw - [13]

Links

1" Axis

Links

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