Kitless pen thread tap advice please

[Phil Dart]

The Bock nibs have landed - I'll post full details about them in another thread later - but in the meantime I'm trying to source a supply of taps to match the housings. Jim posted an interesting thread recently about taps, which opened my eyes, and I wonder what sort of tap kitless makers would need to cut a thread in the nib section.

Given that the hole goes all the way through, I'm guessing that a No2 plug tap would be suitable. Or am I wrong. Perhaps you need to start the thread with a No1 tap.

I want to make the correct taps available on the Beaufort Ink website, so obviously I want to stock the right product. Any advice and input would be greatly appreciated.

Phil

 

[rayf6604]

I asked a similar question recently Phil and Brian posted this link Triple Lead Tap/Dies . It's in the US and I expect the postage will be horrendous. I did find some on a UK site but it was a bewildering array of taps and dies I didn't know where to begin. It was the price that was off putting though, some of the dies were £100 each

 

[rayf6604]

This was the place Phil "TapsandDies"-TAPS DIES DIENUTS,tap sets tap die sets,tap holders die holders,lefthand HSS Taps+Dies CSTaps&Dies BSW tapdie BSF tapsdies BA tap die, BSCycle taps_dies, Model Engineer taps&dies UNC taps+dies UNF tap_die,Brass tap&die BSP tapanddie BSP don't know if you can make head nor tail of what you'd need. I'll be interested to know if you do find the right equipment

 

[johns486]

Are these metric or Imperial threads?

 

[Bigblackdog]

it is interesting to know that you have stock available- I was about to order from Starbond Europa.

I think that a second tap would be fine- there is no need for a bottom tap, and the material is going to be soft enough to go straigh in without a taper tap. The few places that I have seen the 7.9x0.6 (IIRC) tap, then only sell a single tap, so I think it must be that.

do you know when you will have taps available?

 

[Walter]

I may be mistaken but I think you would only need the triple start type for the cap to barrel fitting. For the thread to take the nib unit you would need a thread to match the unit and I think a No1 (taper) tap would be the best option as this would make it easiest to start the thread but, since the hole goes all the way through it would still cut a full size thread. That said, a No 2 would do the job too.

Cheap tap sets which only include one tap per thread size rather than sets of two or three usually only provide a No1 tap as this will suffice for everything except blind holes.

This is based on my knowlege of taps in general and I make no claims to having specialist knowledge with regard to kitless pen threads.

 

[Themackay]

In my engineering days I always tapped holes using Taper intermediate and plug tap ,mind you that was mostly stainless steel,so I would never think of trying to tap a hole with a Plug tap even in soft material,only my opinion.

 

[Phil Dart]

Thank you gents. Ok so a No1 starter tap would do the job given that the hole goes all the way through the section. Between you you've sorted me out I think. Thanks

it is interesting to know that you have stock available- I was about to order from Starbond Europa.

....do you know when you will have taps available?

Mark, yes, they're all here, size 5 and size 6, in gold plate, bi-colour, polished steel, and solid gold, plus size 5 itallic in polished steel. Its a question of photographing and uploading dozens of combinations before I can make them live on the website, but if you need some nibs, just PM me your requirements or give me a ring and I'll be happy to sort you out.

I don't know about the timescale for the taps yet. The threads are extremely unusual to say the least, and I'm waiting for replies from one or two manufacturers. But hopefully not long. Now I know what type of taps to get, that will help the process.

 

[Terry]

Phil you should always start with a taper tap to ensure you get a perfect entry. If you start with a second or plug you run the risk of the thread being off square or not true to the stock resulting in a pen that looks imperfect !!!

 

[bellringer]

What size is the thread on the bock nibs

 

[Bigblackdog]

7.9mm x 0.6 for the large and 6.4mm x 0.6 for the smaller one.

 

[Grump]

Once again you are all right so why contradict?
Walters answer of only needing the triple start for cap to barrel is also correct so save the expense and complication of using those.
I would suggest a taper tap would be sufficient for a through hole with normal pen materials.
Ask the manufacturers what threads they use and match those if you want to supply taps.

 

[bellringer]

7.9mm x 0.6 for the large and 6.4mm x 0.6 for the smaller one.

Is that the thread size if so it a very strange size


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[Phil Dart]

Thanks again guys. I've got some samples on the way from UK manufacturers, and I've also been speaking with "offshore" manufacturers. So between then I should be able to get something sorted.

Ask the manufacturers what threads they use and match those if you want to supply taps.

Thanks Brian - its not a question of every thread out there, just two, which Mark has listed above. They are so unusual that nobody seems to have them as standard, so they've got to be made. I was just trying to establish here what type of taps to get, not the size, which I already know.

 

[Phil Dart]

Is that the thread size if so it a very strange size

Yes, that's the thread sizes Alex, and yes, both very strange sizes. Why? good question! Bock were not easy to deal with in the first place and it seems they want that to carry on now they've got all my money.

Never mind. I don't really like sitting down relaxing anyway.

 

[bellringer]

Yes, that's the thread sizes Alex, and yes, both very strange sizes. Why? good question! Bock were not easy to deal with in the first place and it seems they want that to carry on now they've got all my money.

Never mind. I don't really like sitting down relaxing anyway.

Here are the taps


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[Phil Dart]

Here are the taps


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No link there Alex I'm afraid

 

[bellringer]

Try this http://www.starbond-europa.de/index.php?cPath=309_306_290


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[Phil Dart]

Try this Starbond Europa


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Thanks Alex. Yes I know you can get them from there, but they are a retail supplier. They speak no English, are notoriously difficult to deal with, take no form of payment apart from bank transfer, and charge the equivalent of about fifteen quid to send them to the UK.

Given that Beaufort Ink is a retail supplier too, it's a trade supplier I need, so I can put them on the Beaufort Ink website along with the nibs.

 

[Jim]

I got the triple start and was told that these sizes would be sufficient a 9 x.75 tap and die and a 10 x.75 tap and die for normal threading?