I don't think it would of made a diffrence on this pen kit. The threads themself don't have any force on them when pressing togather, and even if they do get a little stress, it's on the inside of the tube where it would not help. I do have a few press blocks for the pen kits that need it though. The problem is that the thread coupler is a thin band of plastic on the inside of the cap. That plastic band snapped in two when she pulled on it. (BTW, she did it in front of me and did not pull hard, that is the most shocking.)This could of been prevented by making the coupler not able to pass thru the center band by being fully retained by the center band. When she pulled the coupler broke in half and part of it came out of the cap still attached on the pen body.
I honestly don't think I will make all too many of these pens, there have just been too many issues I do not care for. One problem is the accent on the center band that keeps getting loose and spinning. Then the flange on the pen body on the nib end that has loosened up twice so that it felt loose when using it. A simple one piece thread coupler would of solved this as most pens have this already. Now add in the broken coupler on a pen that has only been in daily use for about 2 months?? I would NOT be happy if I had paid $100 for this pen and had these issues, who would?? [
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I do not think these should not be issues on a pen kit that, where the hardware is $30.00 range. They are all design issues that could be fixed eaisly to improve an otherwise great looking pen.