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== Hemostats ==
[[File:Dial Indicator Front.jpg|thumb]]
Project developed by [[User:Patrick Gilland]]
{{Statusboxtop}}
{{status-design}}
{{status-prototype}}
You can help Appropedia by contributing to the next step in this [[OSAT]]'s [[:Category:Status|status]].
{{boxbottom}}


==Abstract==
{{Project data
# A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.  
| authors = User:Devon Smith
| completed = 2018
| made = Yes
| replicated = No
| cost = USD 3.15
}}


# Picture of completed print using your printer [[Image:Hemostat.jpg|200px|right]]
* A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.
* https://www.youmagine.com/designs/dial-indicator
* OSAT: https://www.appropedia.org/Open_Source_Appropriate_Technology


== Bill of Materials==
== Bill of Materials ==


{| class="wikitable"
{| class="wikitable"
|-
! Part
! Part  
! Quantity
! Quantity
! Source
! Source
! Comments
! Comments
|-
|-
| PLA
| PLA
| ~XX grams
| ~87 grams
| Filament supplier of choice
| Filament supplier of choice
| Color of choice
| Color of choice
|-
|  Dial Indicator Body
|  1
|  [/ Youmagine]
|  Using PLA
|-
|  Dial Indicator Top
|  1
|  [/ Youmagine]
|  Using PLA
|-
|-
| Spacer
| Dial Indicator Body
| 3
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Dial Indicator Needle
| Dial Indicator Top
| 1
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Gear 1-2
| Spacer
| 1
| 2
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Gear 3-4
| Dial Indicator Needle
| 1
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Gear 5-6
| Gear 1-2
| 1
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Dial Indicator Plunger
| Gear 3-4
| 1
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| Gear 7
| Gear 5-6
| 1
| 1
| [/ Youmagine]
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
| Using PLA
| Using PLA
|-
|-
| 1/8 Diameter Button Head Cap Screw 1 inch long
| Dial Indicator Plunger
| 3
| 1
|
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
|
| Using PLA
|-
|-
| 1/8 Diameter Button Head Cap Screw 1.25 inch long
| Gear 7
| 1
| 1
|
| [https://www.youmagine.com/designs/dial-indicator/ Youmagine]
|
| Using PLA
|-
|-
| 1/8 Diameter Nylock Nut
| 6-32 Button Head Cap Screw 1 inch long
| 4
| 3
|
|
|
|
|-
|-
| 1/8 Inner Diameter Washer
| 6-32 Button Head Cap Screw 1.25 inch long
| 8
| 1
|
|
|
|
|-
|-
| 6-32 Nylock Nut
| 4
|
|
|}
|}


== Tools needed for fabrication of the OSAT==
== Tools needed ==
# [[Athena Build Overview| MOST Delta RepRap]] or similar RepRap 3-D printer
 
# Phillips head screw driver
# [[Athena Build Overview|MOST Delta RepRap]] or similar RepRap 3-D printer
# 5.5 mm wrench
# Number 2 Phillip's Head Screw Driver
# 1/4 inch Open End Wrench


TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION
TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION


== Skills and Knowledge Necessary to Make the OSAT ==
== Skills and knowledge needed ==
 
* 3D Printing Knowledge & Capabilities
* 3D Printing Knowledge & Capabilities
* Understand the needs & application for the most efficient customization
* Understand the needs & application for a dial indicator
* Ability to assemble fasteners and critically aligned plastic components


== Technical Specifications and Assembly Instructions==
== Technical Specifications and Assembly Instructions ==
# Customize & Print 2 copies of the Hemostats
* It is recommended to print around 30 mm/s with a 100% infill
# Orient the two printed pieces so that:
## The holes align
## The finger holes of the prints are on opposite sides
## Locking wedges are pointing toward each other for proper engagement
# Insert bolt into hole. (Direction does not matter)
# Engage the nut onto the bolt.
# Tighten with very little force using a screw driver and a wrench. (Over tightening will the limit the ability of the hemostats.
== Common Problems and Solutions==
* Make sure that the wedges that lock into each other are both wide enough and deep enough so that they do not break when you try and lock the Hemostats down.
* Make sure the nut & bolt are loose enough to allow free movement of the hemostats.
* Make sure the all of the pieces are thick enough as to not bend under forces ('''minimum of 4mm thickness is recommended''')


== Cost savings==
* Download and print the plastic components listed in the bill of materials
* 25g of PLA ($0.40 USD) + 3mm Nut ($0.13 USD) + 3mm x 12mm bolt ($0.33 USD) = '''$0.86 USD Total'''
** Recommended:
* Compared to '''$4.27 USD''' [https://www.amazon.com/Stainless-Hemostat-Mosquito-Straight-5-Inch/dp/B004C32AIQ/ref=sr_1_4?s=pet-supplies&ie=UTF8&qid=1544113930&sr=1-4&keywords=hemostats Cheapest Hemostats I Could Find]
*** Material: PLA
* '''Cost savings of $3.41 USD (79.9% cost savings)'''
*** Layer Height: 0.25 mm
* '''The biggest benefit is not cost, but availability''' when Amazon delivery is not an option in a remote or devastated area.
*** Shell Thickness: 0.8 mm
*** Fill Density: 100%
*** Print Speed: 50 mm/s
*** Printing Temperature: 215 C
* Clean burrs and excess plastic from parts that may be remaining from print
* Align the corresponding components from the bill of materials to the pictures posted below while ensuring:
** All holes align
** All gears mesh together


== Benefited Internet Communities ==
<center>
'''Name and add links to at least 5 using single brackets around [url name]:'''
<gallery>
*[http://www.appropedia.org/777_OSAT_projects_2018 Appropedia OSAT Project for MY4777]
File:Open Gears.jpg
*[https://www.fieldready.org/overview-1 Field Ready]
File:SpacerAlignment.jpg
*[https://supply.unicef.org/unicef_b2c/app/displayApp/(layout=7.0-12_1_66_67_115&carea=%24ROOT)/.do?rf=y Unicef]
File:Rear.jpg
*[https://github.com/ Gitbug]
File:Dial Indicator Front.jpg
*[https://www.thingiverse.com/ Thingiverse]
</gallery>
</center>
 
* Assemble Fasteners so that the head of the screws are on the face of the indicator
* Lightly tighten fasteners so that gears spin freely with minimal slop
* Assemble needle so that needle is spaced away from dial face
* Once completed, use a protractor to mark the face of the indicator in whichever scale is desired


==References==
== Common Problems and Solutions ==


* These hemostats were designed based on my own used of them
* If the gears don't align and interface properly, first ensure they are oriented with the proper gear in the proper location and proper orientation. Also ensure the layering of the gears is correct and in order. Another possibility is that the holes within the body and top components aren't lined up correctly.
* If the plunger is difficult to move: The indicator works best when the dial is rotated to move the plunger to it's location rather than using the plunger to rotate the high gear ratio.


==Bill of Materials==
== Cost savings ==


==Tools Needed for Creation of OSAT==
* 87g of PLA ($1.57 USD) + Hardware ($1.58 USD) = '''$3.15 USD Total'''
* current one on the market: ($172.80 USD:https://www.mscdirect.com/browse/tnpla/86427457?cid=ppc-google-New+-+Measuring+%26+Inspecting+-+PLA_sW2Cu6rhf___164110844316_c_S&mkwid=sW2Cu6rhf%7Cdc&pcrid=164110844316&rd=k&product_id=86427457&gclid=EAIaIQobChMIyMap7rKV3wIVDAtpCh07fwOtEAQYBCABEgL5M_D_BwE/Current Market Indicator)
* '''Cost savings of $169.65 USD (1.82% of the cost)'''


==Skills and Knowledge Necessary to Create OSAT==
== Benefited Internet Communities ==
 
'''Name and add links to at least 5 using single brackets around [url name]:'''


==Technical Specification and Assembly Instruction==
* [[777 OSAT projects 2018|Appropedia OSAT Project for MY4777]]
* [https://grabcad.com/ Grab Cad]
* [https://www.practicalmachinist.com/ Practical Machinist]
* [https://github.com/ Gitbug]
* [https://www.thingiverse.com/ Thingiverse]


==Common Problems and Solutions==
== References ==


==Cost Savings==
* https://www.thingiverse.com/thing:873948/comments


==Benefitted Communities==
{{Page data
| keywords = 3D printing, dial indicator, gears, measurement, precision, plastic
| sdg = SDG09 Industry innovation and infrastructure
| published = 2018
| organizations = MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab, MY4777
| license = CC-BY-SA-3.0
| language = en
}}


==References==
[[Category:3D printing]]
[[Category:Plastic]]

Latest revision as of 18:28, 29 January 2024

Dial Indicator Front.jpg
FA info icon.svg Angle down icon.svg Project data
Authors Devon Smith
Completed 2018
Made Yes
Replicated No
Cost USD 3.15
OKH Manifest Download
  • A dial indicator is a tool used to measure linear displacements. It accomplishes so via the use of a plunger that's constricted to a measured linear movement. Simply, when the plunger is pushed into the body of the tool, the distance it is pushed in is "indicated" on the "dial" face of the tool. This is useful for any kind of precise measurement of thickness, depth, width, and can even be used to ensure a machining device or tool is accurately trammed.
  • https://www.youmagine.com/designs/dial-indicator
  • OSAT: https://www.appropedia.org/Open_Source_Appropriate_Technology

Bill of Materials[edit | edit source]

Part Quantity Source Comments
PLA ~87 grams Filament supplier of choice Color of choice
Dial Indicator Body 1 Youmagine Using PLA
Dial Indicator Top 1 Youmagine Using PLA
Spacer 2 Youmagine Using PLA
Dial Indicator Needle 1 Youmagine Using PLA
Gear 1-2 1 Youmagine Using PLA
Gear 3-4 1 Youmagine Using PLA
Gear 5-6 1 Youmagine Using PLA
Dial Indicator Plunger 1 Youmagine Using PLA
Gear 7 1 Youmagine Using PLA
6-32 Button Head Cap Screw 1 inch long 3
6-32 Button Head Cap Screw 1.25 inch long 1
6-32 Nylock Nut 4

Tools needed[edit | edit source]

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. Number 2 Phillip's Head Screw Driver
  3. 1/4 inch Open End Wrench

TOOL REQUIREMENTS MAY VARY BASED ON NUT & BOLT SELECTION

Skills and knowledge needed[edit | edit source]

  • 3D Printing Knowledge & Capabilities
  • Understand the needs & application for a dial indicator
  • Ability to assemble fasteners and critically aligned plastic components

Technical Specifications and Assembly Instructions[edit | edit source]

  • Download and print the plastic components listed in the bill of materials
    • Recommended:
      • Material: PLA
      • Layer Height: 0.25 mm
      • Shell Thickness: 0.8 mm
      • Fill Density: 100%
      • Print Speed: 50 mm/s
      • Printing Temperature: 215 C
  • Clean burrs and excess plastic from parts that may be remaining from print
  • Align the corresponding components from the bill of materials to the pictures posted below while ensuring:
    • All holes align
    • All gears mesh together
  • Assemble Fasteners so that the head of the screws are on the face of the indicator
  • Lightly tighten fasteners so that gears spin freely with minimal slop
  • Assemble needle so that needle is spaced away from dial face
  • Once completed, use a protractor to mark the face of the indicator in whichever scale is desired

Common Problems and Solutions[edit | edit source]

  • If the gears don't align and interface properly, first ensure they are oriented with the proper gear in the proper location and proper orientation. Also ensure the layering of the gears is correct and in order. Another possibility is that the holes within the body and top components aren't lined up correctly.
  • If the plunger is difficult to move: The indicator works best when the dial is rotated to move the plunger to it's location rather than using the plunger to rotate the high gear ratio.

Cost savings[edit | edit source]

Benefited Internet Communities[edit | edit source]

Name and add links to at least 5 using single brackets around [url name]:

References[edit | edit source]

FA info icon.svg Angle down icon.svg Page data
Keywords 3d printing, dial indicator, gears, measurement, precision, plastic
SDG SDG09 Industry innovation and infrastructure
Authors Devon Smith
License CC-BY-SA-3.0
Organizations MTU, Michigan_Tech's_Open_Sustainability_Technology_Lab, MY4777
Language English (en)
Related 0 subpages, 2 pages link here
Impact 774 page views
Created December 7, 2018 by Devon Smith
Modified January 29, 2024 by Felipe Schenone
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