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Dutchy Excavator Build #2: Adding uniformed rounded ends to track parts...

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Blog entry by darkmyble posted 05-22-2018 03:01 PM 1312 reads 1 time favorited 9 comments Add to Favorites Watch
« Part 1: Tracks... Part 2 of Dutchy Excavator Build series Part 3: Tracks complete.. moving on.. »

Hi folks.. I’m cracking on with the Dutchy Excavator and been working on the tracks.

Parts B & C are exactly the same except that part B has a 2mm hole and parts C has a 2.5mm hole.

The issue I was having was making the rounded edges to both parts B and C. I was knocking off the corners with the bench sander and then sanding them round with my proxxon pen sander.. it wasnt brilliant to be honest.
Uniformity is the key.. and for me this is a huge build, and if i’m going to do it i want to do it right.

So..

I came up with a way of doing it that uniforms every single piece faultlessly.

I made a little platform that I’ve clamped to my bench sanders table and I’ve added a 2mm cocktail stick so that the distance between the disc and the centre of the cocktail stick is 3mm.

Then i place the piece over the cocktail stick, turn on my sander and pivot the piece from left to right..

Repeat both sided until you get…

and then repeat 120 times!!!!

Who challenged me to this build… hmmmmmm haha!

I’ve made a short video too just to see it in use…

https://www.youtube.com/watch?v=xaDOu6uOw3Y

Thanks folks..

Mark :)

-- If at first we don't succeed, measure and measure again



9 comments so far

View GR8HUNTER's profile

GR8HUNTER

4548 posts in 829 days


#1 posted 05-22-2018 03:21 PM

WOW Mark this is a most excellent idea ….thanks you for figuring this out first ….certainly a very good way for uniformity …..I was thinking on making 3 foot pieces then using a router then cutting them to length … THANKS :<))

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

View Dutchy's profile

Dutchy

3064 posts in 2285 days


#2 posted 05-22-2018 04:21 PM

Great to see Mark! I like the way you making the tracks.

-- https://dutchypatterns.com/

View socrbent's profile

socrbent

629 posts in 2386 days


#3 posted 05-22-2018 04:35 PM

Simply Marvelous!

-- socrbent Ohio

View toyguy's profile

toyguy

1655 posts in 3954 days


#4 posted 05-22-2018 05:30 PM

Get idea Mark. Have done this in the past, but not to this scale. You are always on top of things. Very good.

-- Brian, Ontario Canada,

View htl's profile

htl

4055 posts in 1276 days


#5 posted 05-22-2018 11:24 PM

Nicely done!!!!!!!!!!!

-- An Index Of My Model making Blogs here on Lumber Jocks.. http://lumberjocks.com/htl/blog/116729

View hookfoot's profile

hookfoot

247 posts in 2066 days


#6 posted 05-23-2018 11:47 PM

Good idea. My jig for making track pieces is basicly the same, only my jig slides in and out from the sanding face. This way you can load the pieces on your pivot pin away from the sanding face(saves the fingers and you do not have to turn your wheel off and on so much).

View htl's profile

htl

4055 posts in 1276 days


#7 posted 05-24-2018 12:15 AM

Now you guys tell me about it after I’m done. LOL
Will be sure to use this trick from now on, for sure!!!

Hmmmm!!! The more I think about it, my wheel making jig would do the job with a different part holder.
Love it when tips get shared!!!

-- An Index Of My Model making Blogs here on Lumber Jocks.. http://lumberjocks.com/htl/blog/116729

View hookfoot's profile

hookfoot

247 posts in 2066 days


#8 posted 05-24-2018 11:38 PM



Now you guys tell me about it after I m done. LOL
Will be sure to use this trick from now on, for sure!!!

Hmmmm!!! The more I think about it, my wheel making jig would do the job with a different part holder.
Love it when tips get shared!!!

- htl

I shape my wheels the same way.

View crowie's profile

crowie

2567 posts in 2068 days


#9 posted 05-25-2018 11:03 AM

Very cleverly thought out fix Mark..

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

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