experiments with press fit parts - hackware 2.0 talk
TRANSCRIPT
EXPERIMENTSIN
PRESS-FITPARTS
A Hackware v2.0 Presentation
By Kenneth Yong
KURT HAMEL
"A round peg may be the last thing youwant for an easy, predictable, first-
try-fit into a round hole. ”
"....a basic toolbox of design ideas that will help you makepress-fit pins that fit the first time, every time."
ROUND PEG/ROUND HOLE
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."
ALTERNATIVEPIN
DESIGNS
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
01 & 02
CURA
+3 0 -3
03Self-devised rating system
PLA ABS
1.0 1.2 1.4
ClassicRound Peg
Generally fast print time
Uses the least material
Generally tight fit forPLA/ ABS
"Centre-Hole" Peg
Generally fast print time
Moderate use of material
Erratic results with PLAGood fit with ABS
"Base-Hole" Peg
Generally slow print time
High usage of material
Great fit for PLALoose fit for ABS
"Rectangle" Peg
Generally fast print time
Higher use of material atlarger dimensions
Tight fit with PLALoose fit with ABS
*Can break when removing supports
"Ribbed" Peg
Relatively quick print time
Low usage of material
Loose fitting withPLA/ABS
"Cross" Peg
Relatively slow print time
Low usage of material
Very tight fitting withPLA/ABS
"Octagon" Peg
Fastest print time
Moderate usage ofmaterial
Very good fitting with PLALoose fitting withs ABS
"Octagon w/ hole"Peg
Slowest print time
Highest usage of material
Very good fitting with PLALoose fitting with ABS
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