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绿之印象
紫色梦幻
2020你死了
龙记 灰条1
大文Darwin
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学生龙121
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herobrineflyfly:手上只有一根后期的parker 51, A0Mjk 并无发现墨囊接口软化的现象。 23):OB>S` 过手的许多国产暗尖笔也没有。 VO:4wC"7 也许是墨水的问题? (2016-12-10 22:31) mLuNl^)3
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羅大少: -gs I:-Xo 個人並無研究的興趣。 @8W@I| 但以往曾聽人說, qR@ESJ_ Parker 51的Connector最少有4個不同的versions。軟化原因我不清楚。 >j?5?J" ....... TQn!MUj/^
Using This Technique to Repair a Parker “51” iWt%Boyi 85E$m'0O When Parker started making the Aero-metric “51”, the material that was specified for the Pli-Glass sac turned out to be the wrong material. It was fine for use with the acrylic threaded connector parts Parker first used, but when production changed to injection-molded connectors, things got ugly. Over time, the sac would outgas a plasticizer that softened the molded parts. When the company’s engineers discovered this problem, they changed the sac formulation. To salvage a “51” with a softened nipple, cut off the nipple, chuck the remaining part of the plastic connector piece in the lathe, and true up the end as described above for an ordinary section. Bore 1∕4" diameter about 1∕4" deep into the back of the connector. Fuse in a 1∕2" (13 mm) length of 1∕4" polystyrene tubing using Ambroid Pro-Weld applied both to the bore you made in the connector and to half the length of the tubing. Allow the Pro-Weld to flash off for an hour, then use sandpaper to break the sharp edge of the cut end of the tubing, and install a new sac.
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