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Exhaust Heat Shield (toy trucks) drilling indexing jig

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Blog entry by LittleBlackDuck posted 11-02-2018 02:45 PM 647 reads 0 times favorited 9 comments Add to Favorites Watch

Boys and Girls,

Haven’t posted for a while other than make annoying comments to others’ posts. Thought I’d slip in this quickie little blog to give you guys a chance to reciprocate.

I was besotted by J’1974’s build of one of his models using a “perforated” exhaust heat shield. He even went to the trouble of writing up a blog.

With my failing eyesight bolstered by ill fitting glasses, I contemplated that there must be an easier way to do it using a jig.

I believe the secret of these types of jigs is the indexing mechanism. Now I built an grossly over engineered wheel kerfing jig using what I initially thought to be an “ingenious” indexing mechanism. While it worked like a charm it was a bugger to build and if the tip of the indexing pin wore down or broke, the whole indexer would need to be rebuilt. If you got the build right, it was great, however, if you snafued, you had to start again from scratch… bugger that!

Before undertaking this project I designed a new indexer for the kerfing jig,

I have cut the parts out and am in the process of assembling it and making a pilot run and videoing it without too many screw ups. Hopefully will post soon as a project.

Now back to this jig.

I have used the same indexing principle and come up with this idea,

More details will follow when I project this one as well once I have cut, assembled and did a test run.

For all you thrill seekers out there, here is a link to the SkethUp mode.

And for all the smart ones out there that hate reading as much as I do, I have posted this animation to save you having to read the above crap…

-- If your first cut is too short... Take the second cut from the longer end... LBD



9 comments so far

View GR8HUNTER's profile

GR8HUNTER

4912 posts in 885 days


#1 posted 11-02-2018 03:02 PM

as I do understand what you have created here seems to me to be overkill for a simple project that might only get completed 1 time per year if that much besides the newer rigs hide the stacks nowadays but I still thank you for your thinking vino brain and your time :<)))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

View LittleBlackDuck's profile

LittleBlackDuck

2048 posts in 994 days


#2 posted 11-02-2018 08:35 PM


..... to be overkill…..
- GR8HUNTER

Hey GR8, I totally agree that it is way over engineered, however, Iin the words of Kamahl, why are you so unkind to me by referring to it as an overkill.
When Cain killed Abel with a humble stone, he wiped out 25% of the entire earth’s population… now that is what I considerl a weapon of mass destruction... consequently the development of the H-bomb is what I would refer to as an overkill.

The jig is designed to be laser cut out of MDF and some of the somewhat “complex structures” are there to provide rigidity/stability. It allows for different diameters of “heat shields” (3/8”, 1/2”, 5/8” and 3/4”) and the indexer can be swapped out for 6, 8 or 12 perimeter holes…

Now all that is theory so far… I just like to regress back to my technical side (miss my programming past life). Playing with SketchUp is better than watching TV or pornos at night… well, better than TV with all those ads…

-- If your first cut is too short... Take the second cut from the longer end... LBD

View lew's profile

lew

12382 posts in 3928 days


#3 posted 11-02-2018 11:25 PM

Nice use of Sketchup!

What plugin did you use for the gears?

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View GR8HUNTER's profile

GR8HUNTER

4912 posts in 885 days


#4 posted 11-03-2018 12:27 AM


however, Iin the words of Kamahl, why are you so unkind to me by referring to it as an overkill.
When Cain killed Abel with a humble stone, he wiped out 25% of the entire earth s population… now that is what I considerl a weapon of mass destruction... consequently the development of the H-bomb is what I would refer to as an overkill.

- LittleBlackDuck


sorry if I was unkind to you did not mean to be :<((…… I’m just saying to much head play for me LOL :<))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

View LittleBlackDuck's profile

LittleBlackDuck

2048 posts in 994 days


#5 posted 11-03-2018 01:44 AM

Hi lew, I have installed the SPGears (Sketchucation), however, I seldom use it.
I use Mathias Wandel’s Gear Template Generator Program. I bought it a few years ago when it was closer to $10 (now $26). I like it as I can make reduction gears without thinking/calculating. With the laser, they cut perfect. His program can generate an export file (.DAE) that can be readilly imported into SU (as 2D).

-- If your first cut is too short... Take the second cut from the longer end... LBD

View robscastle's profile

robscastle

5387 posts in 2377 days


#6 posted 11-03-2018 06:32 AM

OMG this post has got to be the most exhausting article I have ever read!
Leo would have been proud of you.

BTW I watched the video too OMG again thats one scary shirt! ... you must have made the video on halloween ?
No wonder the wheels moved a bit, I think you were scaring them!
How is poor Mathias going health wise he was a bit crook last time I checked in on him.
I best go check for myself eh?

-- Regards Rob

View robscastle's profile

robscastle

5387 posts in 2377 days


#7 posted 11-03-2018 06:45 AM

Re: What’s up with Matthias Wandel?

Quote Originally Posted by The Jeff View Post
His latest article says he has tendonitis in both elbows and can’t lift anything for a few months.
Thanks Jeff- hope he recovers soon!

I also found this little gem as well

Re: What’s up with Matthias Wandel?

Hope you hear good news. I’m glad this guy (“Hooked On Wood Boats!”) is back online with a new post:

If I had a dollar for every girl who found me unattractive, eventually they would find me attractive.

I guess thats him even with 2Ts

-- Regards Rob

View crowie's profile

crowie

2676 posts in 2124 days


#8 posted 11-03-2018 09:16 AM

You’re on clever duck, sir!!!

Do you have a video of the unit in action for your youtube channel Alex??

-- Lifes good, Enjoy each new day...... Cheers from "On Top DownUnder" Crowie

View lew's profile

lew

12382 posts in 3928 days


#9 posted 11-04-2018 04:49 AM



Hi lew, I have installed the SPGears (Sketchucation), however, I seldom use it.
I use Mathias Wandel s Gear Template Generator Program. I bought it a few years ago when it was closer to $10 (now $26). I like it as I can make reduction gears without thinking/calculating. With the laser, they cut perfect. His program can generate an export file (.DAE) that can be readilly imported into SU (as 2D).

- LittleBlackDuck

Thanks!

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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