Comtec model P135-20/35 Paper Tape Punch

[Wayne S]

Seconded. Punches have to be made to exact tolerances and should be made of a very hard material, (because they can quickly become dull ) that requires special machine tools to manufacture. 


> On May 1, 2022, at 11:42, Paul Koning via cctalk <cctalk at classiccmp.org> wrote:
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>>> On Apr 30, 2022, at 6:35 PM, Will Cooke via cctalk <cctalk at classiccmp.org> wrote:
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>>>> On 04/30/2022 2:09 PM amp1ron at gmail.com wrote:
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>>> Hi Will,
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>>> Is the punch you received capable of punching 8-level tape? While the PDF on Surplus Sales of Nebraska's site says the unit can punch 5- to 8-level tape, one of the photos on the site, https://www.surplussales.com/Images/Equipment/Military/eqp-p135-20-35_2_lg.jpg, makes it look like it can only punch up to 6-level tape.
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>>> -- Ron
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>> It appears that it can only punch 6 (or 5?) level tape the way it is configured.  The manual isn't very clear on it, specifying repeatedly that it can punch 5 to 8 level tape.  But the one I got only has 6 holes as in the picture.  In the back of the manual the parts list specifies different "guide and die blocks."  I haven't hooked mine up yet -- I need a 5 amp, 27 V supply.  But it appears it has everything except the die block to work with 8 level.  I doubt the local electronic supply house will have that die block, so I might modify that one if possible.
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> Safest might be to have a local machine shop make a new die block.  The holes have to be bored accurately, and getting new ones to match with the existing ones might be harder than making a new block with the holes positioned properly.  If you know any tool & die makers that would be the best way to get advice; I wish I had that kind of machining skills but I don't...
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>    paul
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