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Box Cam Template ?


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#1 manatee

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Posted 01 May 2012 - 02:13 PM

I'm getting ready to cut my Box Cam using the template 48-27. The question I have is when I wrap the template around the box cam the two ends don't meet, there is a .200 gap between them, is this right? The plans call for the template to be cut into 2 pieces but I think it would be easier to glue it on in one piece and then careful remove the path material. I have been avoiding this operation for weeks and don't want to screw it up! Also there is a dotted line on the top of the template, what does that line up with?. Thanks.
Bob

#2 Cutter

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Posted 01 May 2012 - 03:04 PM

Bob,
The dotted line only refers to the counter bore.
Your template should be 9.032 long X 2.625 wide.

#3 manatee

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Posted 01 May 2012 - 03:18 PM

Cutter,

Mine is 8.86 x 2.57. Now how did that happen? Maybe when Paul reproduced them. If I line up BDC am I going to be ok? Thanks.
Bob

#4 Cutter

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Posted 01 May 2012 - 03:48 PM

Bob,
I think drawing your own template to size is best.

#5 bruski

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Posted 01 May 2012 - 10:08 PM

Bob,
Take your template over to kincos or some place where they have a copy machine that is capable of increasing the size by a certan percentage so you can enlarge your template. I would say 2% should do it.
bruski

#6 manatee

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Posted 01 May 2012 - 11:56 PM

Thanks Bruski, I had thought about that but was worried about the scale not being right. Also BCD doesn't look like it is in the middle of the flat area if it is suppose to be. How critical is the box cam tolerances?

#7 bruski

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Posted 02 May 2012 - 01:13 AM

Bob,
The BDC is not in the middle of the flat straight area. The flat on the BDC is critical because of the cocking rings to be able to absorb the recoil from the rear of the bolts as they pass through while firing. Other than that, the rest isn't as critical. If I were to redo mine in the future, I would increase the rearward travel a little extra to give more clearance for the bullets to drop without hitting the extractors. It is very tight in that area and if certain cartridges are a little bit longer than others it causes a problem.
Try having a copy made at 1% larger and another at 2% larger or better yet take along your steel ruler and check the measurements while you are there. Go with cutters measurements.
bruski

#8 manatee

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Posted 02 May 2012 - 12:25 PM

Bruski,
I scanned the template and adjusted the size during printing like you suggested and the 102% is just right. Thanks.
Bob

#9 Cutter

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Posted 18 May 2019 - 09:15 PM

Anyone need a Cam ?
I’m making one for the new bolt inspection model.


#10 maccrazy2

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Posted 18 May 2019 - 11:43 PM

I’m interested. How much?

#11 Cutter

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Posted 19 May 2019 - 12:11 AM

I’m interested. How much?

 

You supply me with the lathe blanks, (per sketch)
 two for you and two for me, I’ll finish the cams

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#12 maccrazy2

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Posted 19 May 2019 - 12:32 AM

Sounds good. I’ll order the material tonight

#13 maccrazy2

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Posted 19 May 2019 - 05:23 AM

Got it ordered. I’ll let you know when it arrives

#14 Cutter

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Posted 19 May 2019 - 02:31 PM

 

Anyone need a Cam ?
I’m making one for the new bolt inspection model.

 

 

This is still open



#15 4171

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Posted 19 May 2019 - 03:25 PM

Is the price still two for one? If so I’d like in
Mike

#16 Cutter

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Posted 19 May 2019 - 03:40 PM

Is the price still two for one? If so I’d like in
Mike

You are covered/in Mike, 


#17 Cutter

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Posted 09 June 2019 - 05:23 PM

Cutting Cams today

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#18 Cutter

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Posted 10 June 2019 - 06:59 PM

There it is, first broken drill this year.
Glad I have an extra piece.  ( Thanks Mike )

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#19 4171

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Posted 10 June 2019 - 07:16 PM

Anytime! I have more tube if you need it😳
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#20 Sparky_NY

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Posted 10 June 2019 - 10:13 PM

 

There it is, first broken drill this year.
Glad I have an extra piece.  ( Thanks Mike )

 

It really DOES happen to the best of them !         


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