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Here is a pic of my m6 x .5 fine thread taps as you can see the lead track is furthest back on the starter (taper) tap.
The intermediate (second) tap is nearer the tip and the finish (plug) tap is all thread.

[ATTACH]7612[/ATTACH]

Using the three in this order gives a quality thread that can be relied upon.
Going straight in with the plug risks splitting the blank or overheating and melting it and gives a rough thread as it bites off too much in one go.
Worse still this can happen and it's a bugger when it does as more often than not you ruin the workpeice in getting it out as well as not having that tap any more init?

[ATTACH]7613[/ATTACH]

Learn from my mitsake and get a set not an individual plug tap.
If it's worth doing blah blah.
Whilst I would never wish to contracept young JIMJAM who is vastly more experienced in homebrew fountain pens than I.
I have complete sets of 0.5 and 0.75 from M3 to M8 taps and dies in 0.5 graduations purchased from one of 3 places in the UK but I ain't sure if it was Chronos engineering, RDG tools or Bedford saw company.
I can't see them in their cats now but I did have to enquire by Tellingbone to get them so maybe a ring round could prove fruitful init?

<blockquote data-quote="Grump" data-source="post: 76360" data-attributes="member: 232">Here is a pic of my m6 x .5 fine thread taps as you can see the lead track is furthest back on the starter (taper) tap.The intermediate (second) tap is nearer the tip and the finish (plug) tap is all thread.[ATTACH]7612[/ATTACH]Using the three in this order gives a quality thread that can be relied upon.Going straight in with the plug risks splitting the blank or overheating and melting it and gives a rough thread as it bites off too much in one go.Worse still this can happen and it&#039;s a bugger when it does as more often than not you ruin the workpeice in getting it out as well as not having that tap any more init?[ATTACH]7613[/ATTACH]Learn from my mitsake and get a set not an individual plug tap.If it&#039;s worth doing blah blah.Whilst I would never wish to contracept young JIMJAM who is vastly more experienced in homebrew fountain pens than I. I have complete sets of 0.5 and 0.75 from M3 to M8 taps and dies in 0.5 graduations purchased from one of 3 places in the UK but I ain&#039;t sure if it was Chronos engineering, RDG tools or Bedford saw company.I can&#039;t see them in their cats now but I did have to enquire by Tellingbone to get them so maybe a ring round could prove fruitful init?</blockquote>

[QUOTE="Grump, post: 76360, member: 232"] Here is a pic of my m6 x .5 fine thread taps as you can see the lead track is furthest back on the starter (taper) tap. The intermediate (second) tap is nearer the tip and the finish (plug) tap is all thread. [ATTACH]7612._xfImport[/ATTACH] Using the three in this order gives a quality thread that can be relied upon. Going straight in with the plug risks splitting the blank or overheating and melting it and gives a rough thread as it bites off too much in one go. Worse still this can happen and it's a bugger when it does as more often than not you ruin the workpeice in getting it out as well as not having that tap any more init? [ATTACH]7613._xfImport[/ATTACH] Learn from my mitsake and get a set not an individual plug tap. If it's worth doing blah blah. Whilst I would never wish to contracept young JIMJAM who is vastly more experienced in homebrew fountain pens than I. I have complete sets of 0.5 and 0.75 from M3 to M8 taps and dies in 0.5 graduations purchased from one of 3 places in the UK but I ain't sure if it was Chronos engineering, RDG tools or Bedford saw company. I can't see them in their cats now but I did have to enquire by Tellingbone to get them so maybe a ring round could prove fruitful init? [/QUOTE]

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