[教學] 為何線徑是1.75mm不是1.8mm或乾脆2.0mm?

dtom

雖然覺得怪, 但我一直都無問過呢個問題

有興趣既就睇下啦
http://www.coconuts.com.tw/portf ... B9%BE%E8%84%862-0mm

g2david

1.75mm, 3mm,  應該係Stratsys printer 指定size.  身為Market leader, 選料方面應該做了research.

g2david

http://www.imim.pl/files/archiwum/Vol4_2013/69.pdf

The filament used in the FDM process requires a spe-
cific diameter, strength, and certain other properties. For a
filament fabricated from a composite mixture, a single screw
extruder was developed. Due to the die swell phenomenon
during extrusion of a polymer, there is a difference in diam-
eter between the die and the produced filament. To achieve
a consistent diameter and minimise this difference, the ma-
chine has an adjustable screw speed, pressure, and tempera-
ture. All these parameters are examined and selected until an
optimum diameter for the filament is reached (1.75 mm).

Super169

雖然覺得怪, 但我一直都無問過呢個問題

有興趣既就睇下啦
dtom 發表於 2015-8-18 00:19

感覺好似有點夾硬黎自圓其說.
計算出膠量都係用程式去做, 出黎既數值靚唔靚仔一D都唔重要, 就算計出黎一大抽小數, 部機都係咁做野.

ghost2377

感覺好似有點夾硬黎自圓其說.
計算出膠量都係用程式去做, 出黎既數值靚唔靚仔一D都唔重要, 就算計出黎一 ...
Super169 發表於 2015-8-18 11:58

同意,我個人覺得係方便現成內徑2mm的管子

g2david

其實有1.5mm abs.  供應。

我都覺得應該方便用 2mm tube 才選1.75mm.

fred2088

回復 6 #g2david

是不是新機多數用1.75mm絲？

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Super169

回復 g2david

是不是新機多數用1.75mm絲？

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fred2088 發表於 2015-8-19 10:57

相信應該係.  
就咁諗, 幼絲出膠量會控制得好 d, 步進推膠時既誤差影響都無咁大, 如果做到既, 1.75mm 會好過 3mm.