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Author Topic: Off w/ the Screw Clamps,, On W/ the Cam Clamps  (Read 6129 times)

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Offline robnrob2

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Off w/ the Screw Clamps,, On W/ the Cam Clamps
« on: February 03, 2010, 08:10:42 am »
Well now that I have the hydrolic feed working well, and the board return is an added plus, I still had the screw type clamps for securing the logs,, and they worked as expected, but you gotta wind them in to hold the log, and when done un-wind them, which may only seam like a few seconds or so each way, but as the day wears on you do start to realize how much time you spend, turning and then turning again,,

 

There were 3 like this, that actually needed to go,, there are really 4 but the one I kept doesnt get used much, it's down at the front of the mill for doing short stuff as short as 24-30",, hobbiest wood..

Heres another one.


,, After much, much studying this style, and looking at lots of pictures and stuff,  Here all the parts ,,
 All the parts have been fabricated, painted and assembled,
Since the original clamps are of 1 1/2' square tubing, I used 1/4 x 1 1/2" faltbar for the main body,, The cam was cut from 1" round bar, 1" long and a 5/16" hole drilled way off center,, the handle is 1/2" round bar cut at 6 1/2" long,, the clamping bar is 1" square tubing cut at 6" long w/ 1" x 3/4" bar for the spike and welded on top.



Welded on,,Now the new cam clamp has been added, works very nicely, and actually has much more clamping force then you really need.,, in fact thiis photo half clamped,, the handle will go all the way down.



closer up,,



I reckon as time goes on I may some day  as the pocket book allows, do a hydrolic clamp and truner,,


Offline bandmiller2

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #1 on: February 03, 2010, 08:59:33 pm »
Good job Rob,What does that cam assy. slide on at its base.Does it slide on square tube and bind when you cam it??Frank C.
A man armed with common sense is packing a big piece

Offline TJB

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #2 on: February 03, 2010, 09:05:45 pm »
I like those!!!  I think I need to upgrade to a set of them.
TJ

Offline robnrob2

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #3 on: February 04, 2010, 07:37:26 am »
Good job Rob,What does that cam assy. slide on at its base.Does it slide on square tube and bind when you cam it??Frank C.

Thats it  the square tubing is 1" and so is the cam,, so it mainly pushes or applies the preasure on the 2 corners,, I thought about sliding a piece of 1/6" or 1/8"  in there and letting it slide on that, but we'll see how it wears,, I did put a spot of grease on it before use..
Thanks Robert

Offline Magicman

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #4 on: February 04, 2010, 09:13:13 am »
I love to see the fine examples of craftsmanship that are displayed here on FF..... 8)

It makes us all proud..... :D
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Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #5 on: February 05, 2010, 06:39:00 am »
but you gotta wind them in to hold the log, and when done un-wind them, which may only seam like a few seconds or so each way, but as the day wears on you do start to realize how much time you spend, turning and then turning again
 

I have the same frustration - what a well executed solution and good workmanship. That will be my next sawmill mod. 8)
Bob
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline bandmiller2

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #6 on: February 05, 2010, 07:25:42 am »
Everything on a mill should be quick and easy to operate,if something is owkward hard to reach or just not handy you tend to not use it.Screws are ok if they have a fast forward like a half nut so all you need is one twist to tighten.Alot of circular mill dogging systems work well on a bandmill just lay them down,such as the Belsaw clamps.Frank C.
A man armed with common sense is packing a big piece

Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #7 on: February 10, 2010, 12:47:03 pm »
How much throw do you have on the clamp?  (or how far does the spike travel?). I'm making my own after your idea and am trying to decide just how much I need. (I tried to PM you but it got kicked back).
Thanks,
Bob
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline robnrob2

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #8 on: February 11, 2010, 08:06:35 am »
How much throw do you have on the clamp?  (or how far does the spike travel?)

Well I just went out and measured it, the throw, and it is a good 1 1/4"  and leme tell ya, ya dont need that much,, I didnt consider throw, I just wanted to make sure it worked,, so with the piece of 1" round bar, I  1st drilled a 1/4" pilot near the edge, but with plenty of room to redrill to 5/16 and not be to close to the edge,,when I welded the handle on, as the whole assembly was just loosely sbolted together, and on the bench, I rotated the cam till it was just past center, and then glued, er welded the handle on,,  You cannot lock these if you ram them up against a log or cant,, to much throw,, so we actually have to pull back a lil bit,,,But I would say I think more throw is better then not enough,,

Now my bottom clamps,, you know the ones,, the ones ya use when you wanna cut down to within 1",, there a screw type,,they will be next, but on those I have to have a lil bit different handle config, as those bottom clamps slide on a 1" round bar, and the handle cannot hit the round bar slide,,

Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #9 on: February 11, 2010, 07:02:57 pm »
I drilled a 3/8" pivot hole for my 1" cam and got a little more than a 1" throw. I think I will go with that. I can change the cam easily if its necessary to to get more throw but I don't I will need it.

I think my spike shape (1/2" x 2") will allow me to use the same spike for the last cut but that remaine to be seen.

Thanks,

Bob


Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline papow22

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #10 on: June 24, 2014, 01:07:00 pm »
I would have applied that to "the useful sawmill mods".Nice idea even though. ;)
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Offline coastlogger

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #11 on: April 05, 2017, 08:13:51 am »
hopm could you explain the railroad spike thing a bit more. Sounds like something I could use.
clgr

Offline brewdog

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #12 on: April 17, 2017, 05:40:02 am »
would like to see what its sliding on[bottom]  thanks

Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #13 on: April 17, 2017, 07:31:24 am »
Mine slides on a 1" solid rod.

Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline Kbeitz

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #14 on: April 17, 2017, 09:02:20 am »
I made mine really different. I used part of a rack and pinion.
I only used the the rack. with a slide almost like the picture above.
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Offline Quebecnewf

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #15 on: April 18, 2017, 04:41:07 am »
KelLoGg

Anywhere one could buy the one like you made. My long clamp slides on a one inch round rod as the the one you made but it is screw type . While it works fine and I have used it for many years (25) I would switch to the lever type if I could get one . I don't do any welding so fabbing one up myself is not an option .

Know of any mills that come with type of long clamp maybe I could buy one from them .

Thanks Quebecnewf

Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #16 on: April 18, 2017, 06:11:34 am »
I looked on CookSaw web page under sawmill videos and found this:



It's similar to what Robnrob2 and I made.
Bob
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer

Offline kelLOGg

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Re: Off w/ the Screw Clamps,, On W/ the Cam Clamps
« Reply #17 on: April 18, 2017, 06:15:26 am »
oops, I didn't know I posted the whole video. Skip to 30:50 minutes to see the clamp.
Bob
Cook's MP-32, 16HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw, tandem trailer, log arches, trailer, tractor, hammer