experiments with press fit parts - hackware 2.0 talk
TRANSCRIPT
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EXPERIMENTSIN
PRESS-FITPARTS
A Hackware v2.0 Presentation
By Kenneth Yong
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KURT HAMEL
"A round peg may be the last thing youwant for an easy, predictable, first-
try-fit into a round hole. ”
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"....a basic toolbox of design ideas that will help you makepress-fit pins that fit the first time, every time."
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ROUND PEG/ROUND HOLE
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ROUND PEG/ROUND HOLE
"Any variation in design dimensions (eg.length or diameter of pin) or printing
conditions (eg. a different printer,different material, different orientation)
left me guessing what that right clearanceshould be between the pin and the hole."
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ALTERNATIVEPIN
DESIGNS
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TEST PARAMETERS*
*Approach is not entirely scientific
Time taken in min Amt. of PLA/ ABSused
"Snug-ness" ofpeg's fit to hole
PRINT TIME MATERIAL USED FIT
030201
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01 & 02
CURA
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+3 0 -3
03Self-devised rating system
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PLA ABS
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1.0 1.2 1.4
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ClassicRound Peg
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Generally fast print time
Uses the least material
Generally tight fit forPLA/ ABS
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"Centre-Hole" Peg
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Generally fast print time
Moderate use of material
Erratic results with PLAGood fit with ABS
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"Base-Hole" Peg
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Generally slow print time
High usage of material
Great fit for PLALoose fit for ABS
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"Rectangle" Peg
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Generally fast print time
Higher use of material atlarger dimensions
Tight fit with PLALoose fit with ABS
*Can break when removing supports
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"Ribbed" Peg
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Relatively quick print time
Low usage of material
Loose fitting withPLA/ABS
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"Cross" Peg
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Relatively slow print time
Low usage of material
Very tight fitting withPLA/ABS
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"Octagon" Peg
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Fastest print time
Moderate usage ofmaterial
Very good fitting with PLALoose fitting withs ABS
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"Octagon w/ hole"Peg
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Slowest print time
Highest usage of material
Very good fitting with PLALoose fitting with ABS
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