Triple start taps and dies

[Jim]

I have a 12mm x .8 x3 triple start set of die and tap from Mike Redburn.

I also got this set from Mike, but i could be tempted to go for the 10mm also ..

 

[davidj44]

When I have thought about the process of threading the parts, my concern has been threading the outside of the nib section that screws into the pen barrel, and the inside thread for the nib housing. What worries me is the potential for cracking the nib section during threading. Having not actually tried this yet I would think that having the maximum amount of thickness of material as practically possible would be a good thing? Am I over this thinking the process? I refer to using acrylics, metals I can appreciate.

Looking forward to seeing the outcome of your endeavours with this Phil, and I salute you for taking a lead with this. The cost of the taps and dies from that US supplier for triple starts is rather prohibitive for me and I was going to be happy with standard one starters.

I don't find this a problem really. I think the trick is to make a couple of prototypes to work out the sequences - and the measurements. Also you can stiffen up and protect a "thin" threaded area with an external thread by having a short threaded sleeve to put on while you do the internal thread. I have so far used 12mm for body and cap and 9mm for the section to body and using a sleeve works well. You could do the same with the section while threading for the feed but I haven't found this much of a problem - I think it's because the 6.4mm (Bock) for the feed isn't located in line with the 9mm outside thread - if you follow! Suck it and see is the answer! Lots of info on the IAP library, by the way.

I could be tempted by 10mm triple start to add to my collection of taps and dies - for slimmer pens.

 

[davidj44]

I'd love to be able to afford to start making kitless pens, but I can't see that happening anytime soon

Ray, take a look at YouTube there's a couple of useful videos on there, A couple of the chaps make madrels that fit the inside threads before starting on the outside

Try it with single start taps and dies to begin with - pretty cheap on eBay.

 

[rayf6604]

I don't find this a problem really. I think the trick is to make a couple of prototypes to work out the sequences - and the measurements. Also you can stiffen up and protect a "thin" threaded area with an external thread by having a short threaded sleeve to put on while you do the internal thread. I have so far used 12mm for body and cap and 9mm for the section to body and using a sleeve works well. You could do the same with the section while threading for the feed but I haven't found this much of a problem - I think it's because the 6.4mm (Bock) for the feed isn't located in line with the 9mm outside thread - if you follow! Suck it and see is the answer! Lots of info on the IAP library, by the way.

I could be tempted by 10mm triple start to add to my collection of taps and dies - for slimmer pens.

Thanks for the info and tips, I will just have to give it a go but I don't like the idea of experimenting on expensive blanks, I'll have to try the cheaper acrylics from Axminster

 

[davidj44]

Thanks for the info and tips, I will just have to give it a go but I don't like the idea of experimenting on expensive blanks, I'll have to try the cheaper acrylics from Axminster

That's the idea! I used simple black acrylic to play with. The only way to learn is to have a go. You can sort out the sequence which works - and I make lots of notes with measurements to help the next time. A bit of cursing also works wonders.

The other thing is to make various mandrels to hold the different parts.

 

[ZuluTiming]

I also got this set from Mike, but i could be tempted to go for the 10mm also ..

Do you remember by any chance how much did you pay PP or any other charges?
Thanks.

 

[Jim]

Sorry ZT, I just went through my emails and couldn't find any info other than P&P being $15 ..

 

[ZuluTiming]

Sorry ZT, I just went through my emails and couldn't find any info other than P&P being $15 ..

Thanks for the info.

 

[davidj44]

Do you remember by any chance how much did you pay PP or any other charges?
Thanks.

Mike does refund if p&p is less than the 15 dollars.

 

[rayf6604]

Phil, I couldn't find the thread that you posted on to say the taps and dies are on order, do you have any update on possible availability of them?

Sent from my SM-G928F using Tapatalk

 

[Macaronytony]

I believe that going for the nib threads was right and also a standard set of cap to body threads in 10's, 12's and 14's is possibly right but start with the smaller sizes. There is some thought of going for the 9mm thread now as that will enable a smaller pen to be made as well.

Funny you say that Eamonn the prototype I'm working on as a 10mm body with 9x0.75 threads, single start through.

So I would be interested in the 9mm triple.

 

[wm460]

My wife would