Home Made "Alaskan" Jig

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Forum topic by PG_Zac posted 02-24-2009 02:01 PM 5090 views 8 times favorited 11 replies Add to Favorites Watch
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371 posts in 4730 days

02-24-2009 02:01 PM

Topic tags/keywords: jig alaskan chainsaw sketchup design

As promised in my post, here is the design of my prototype version of the “Alaskan” Jig.

Before going any further I have been advised to state a disclaimer. I wish I didn’t need to, but with the way the world is going, I’d rather be safe than screwed.

This information and design is presented for educational purposes only. Any person using this information for any use whatsoever does so entirely at their own risk. Neither, nor any member of the site, nor the author of this design & post accept any responsibility for any damage, injury, or loss of any kind, due to the use of this information. This design may be copied and distributed free of charge for personal use only. No person or organization may use this for financial gain, or any commercial undertaking of any sort.

That said, I’ve heard that the easiest way to rid the world of those types who sue a restaurant because their coffee burned their mouth, is to remove all warning labels, and let nature take its own course. Natural selection – just like in the animal kingdom.

This was my first attempt, and is the jig shown in my other posts. I still use it, but there are some improvements I must incorporate into my next jig. It is, after all, a prototype.

If you click on the image, the SketchUp file should download automatically.

Slabbing Jig

-- I may be schizophrenic, but at least I have each other.

11 replies so far

View Scott Bryan's profile

Scott Bryan

27249 posts in 5163 days

#1 posted 02-24-2009 02:39 PM

Thanks for the model. I will have to look into one of these. I have always thought it would be wonderful idea to mill my own lumber. This was brought home to me a few years back when we had to have a cherry and some ash trees removed that were either dying or leaning toward the house. I tried to find someone with a portable bandsaw mill to saw them up but could not locate anyone. Needless to say they all went for firewood since I did not have any way to mill them. Wish I had something like this available back then.

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View scarpenter002's profile


619 posts in 5246 days

#2 posted 02-24-2009 03:30 PM

Great looking design. Did you use aluminum stock for the jig and what did you use to secure the chainsaw bar? Some type of adhesive backed rubber pad?

-- Scott in Texas

View PurpLev's profile


8653 posts in 4990 days

#3 posted 02-24-2009 04:11 PM

ahhhh…. Natural selection, the beauty of the beast. lol

Thanks for sharing the jig design, looks very handy, I might just end up using it one day when I come across bigger logs (and a better chainsaw)

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View oldskoolmodder's profile


802 posts in 5021 days

#4 posted 02-25-2009 02:20 AM

thanks, and I promise not to sue or write anything bad when I cut off both my hands, while using this design.

-- Respect your shop tools and they will respect you - Ric

View brianinpa's profile


1812 posts in 5064 days

#5 posted 02-25-2009 03:19 AM


-- Brian, Lebanon PA, If you aren’t having fun doing it, find something else to do.

View PG_Zac's profile


371 posts in 4730 days

#6 posted 02-25-2009 07:18 AM

Scott (scarpenter002),
Yes these are standard aluminium sections. They weren’t the ones I wanted, but the closest available.
25X25 mm square tube
25X50 mm angle
19X3 flat bar

The chainsaw bar clamping pads are pieces of flat bar welded onto the square tube. The main purpose of these pads was to raise the square tube clear of the chain. I was a little unsure of the holding power, but with the bolts either side, the grip is firm enough to prevent slipping for hours at a time. My next-gen slabbing jig will have some different / extra form of grip.

-- I may be schizophrenic, but at least I have each other.

View PG_Zac's profile


371 posts in 4730 days

#7 posted 02-25-2009 03:34 PM

OldSkool – I’m glad you won’t sue anyone, but please make sure to post the pics in the safety section ;-)

I’m more concerned about the idiots who don’t do their homework before attempting new things. I’m sure there are visitors to this site who “borrow” ideas for their own ends.

To help others understand how simple it is to build this jig, let me explain the tools I used.

I had a Radial Arm Saw with a ratty old blade to cut the tubes, and the “half-lap” joints.
I used a knackered hacksaw to cut the flat bar.
I had a fairly decent old hand-held drill for the holes, using a selection of HSS twist drills for the smaller holes, and a standard 16mm spade drill for the larger holes. I have to say that a spade drill on aluminium is an interesting operation.
I used paper to give me clearances between the sliding parts.
I had the welding done by a back-yard welder. To ensure that the parts stayed aligned for welding, I riveted them together.
My riveter is an el-cheapo ten-year old unit that falls apart every 20 or so rivets.

So who needs high-tech fabrication facilities?

Not me, at least not for building this jig.

-- I may be schizophrenic, but at least I have each other.

View hotstick's profile


7 posts in 5253 days

#8 posted 02-27-2009 07:01 AM

WONDERFUL. Thank you so much for your efforts and research. you have provided a fine jig for our saws. I firmly believe in natural selection and by protecting all the idiots that used to die early, we have made it dangerous for the rest of us. I await the improved design with baited breath. However, with a neighborhood full of downed trees from our ice storm, I will be building this great slabbing jig and then incorporating the improvements later.

Once again, Thank you.


View PG_Zac's profile


371 posts in 4730 days

#9 posted 02-27-2009 07:21 AM

Hold off on the building for a day or three.

PM me your email or maybe your Yahoo ID for an IM chat, and I’ll go through the operating issues with you. The changes in design are not easy to incorporate after the build, It would mean a rebuild. My revised design is literally only 2-3 days away. The design is done, it just needs a little clean up and finishing touches. If you want to start buying the material for the build, note that I use all the same aluminium sections and fixings in the new design – just the lengths of the members has changed.

Also, see
ShopMonkey has a much simpler Jig. Some of us are eagerly awaiting details of the jig, but my first impression is that his unit could have issues keeping the bar true to the cut line. We’ll see when the specs.

-- I may be schizophrenic, but at least I have each other.

View PG_Zac's profile


371 posts in 4730 days

#10 posted 03-08-2009 01:05 PM

The revised Slabbing Jig design is here

Be careful, and Enjoy

-- I may be schizophrenic, but at least I have each other.

View SCOTSMAN's profile


5849 posts in 4926 days

#11 posted 04-16-2009 11:02 PM

very interesting ps dont worry about being a schizophrenic why every second person in Ireland is one.LOL Alistair

-- excuse my typing as I have a form of parkinsons disease

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