Routing for a pinewood derby car - Router Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 03-01-2011, 11:31 AM Thread Starter
Registered User
 
Join Date: Mar 2011
Country: United States
First Name: Chris
Posts: 8
 
Default Routing for a pinewood derby car

I currently am routing the underneath of derby cars with a small Proxxon router. My lines are not straight and would like them to be. I am getting into adult league racing and need to be able to make a consistent car. Since I'm a newbie, the site won't let me insert a weblink. If you go to youtube and search "Pinewood Derby weight pocket routing" there is a video showing a guy who has a jig set up for his router for pinewood derby. I'm uncertain if the Proxxon router is too small to set up this way (underneath). The 1/8" (3.2mm) router bit does not extend very high to make the cut through the underneath of the jig board. I typically route approximately 1/4" to 5/16" into the wood piece. One thought I had was to make an 'upside' down jig. Would place the Proxxon router on top. I've never made a jig, so layman terms would be nice. Thanks all - there is a wealth of knowledge here. Some posts have giving me ideas of other areas to try. Thank you.
Advance The Man is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 03-01-2011, 12:05 PM
Forum Contributor
 
Join Date: Jan 2006
Country: United States
First Name: Bj
Posts: 23,786
       
Default

Hi Chris

The jig in the video looks Very unsafe, I would suggest you use a template and the bit below..any time you drop stock on the bit in a floating mode you are asking for it..

Amazon.com: Milescraft 2216 1/2-Inch Bearing Guided Straight Router Bit for Mortising: Home Improvement

you can make a quick template by gluing up some 1/2" thick MDF sticks to make the sq. pocket you need..and use some tape "DSCT" to hold the parts in place.
Note once you have the pocket in place than cut the stock down to size..

YouTube - Pinewood Derby weight pocket routing

Proxxon Micro Router MOF

====

Quote:
Originally Posted by Advance The Man View Post
I currently am routing the underneath of derby cars with a small Proxxon router. My lines are not straight and would like them to be. I am getting into adult league racing and need to be able to make a consistent car. Since I'm a newbie, the site won't let me insert a weblink. If you go to youtube and search "Pinewood Derby weight pocket routing" there is a video showing a guy who has a jig set up for his router for pinewood derby. I'm uncertain if the Proxxon router is too small to set up this way (underneath). The 1/8" (3.2mm) router bit does not extend very high to make the cut through the underneath of the jig board. I typically route approximately 1/4" to 5/16" into the wood piece. One thought I had was to make an 'upside' down jig. Would place the Proxxon router on top. I've never made a jig, so layman terms would be nice. Thanks all - there is a wealth of knowledge here. Some posts have giving me ideas of other areas to try. Thank you.



"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
http://www.routerforums.com/search.php?searchid=944097



Last edited by bobj3; 03-01-2011 at 12:08 PM.
bobj3 is offline  
post #3 of 16 (permalink) Old 03-01-2011, 12:33 PM
Registered User
 
Ralph Barker's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Ralph
Posts: 2,001
 
Default

There are numerous ways to approach the objective. Like Bob, I don't think I'd suggest the method shown in the video, since it appears his jig is attached to the router, and the router is just sitting on the floor, wobbling back and forth. One slip, and his fingers will be in the bit, and the workpiece will be stained blood-red.

My preference would be a jig that holds the workpiece firmly in place, and then defines limits for the travel of the router, with the router being on top, so you can see what is being done. The task of defining the horizontal travel of the router could be done with either a template arrangement (with bearing-equipped bits or guide-bushing guides), or via stop blocks against which the router base would ride at the limits of travel. Either approach (template or stop blocks) would work.

The template approach would add a vertical depth-of-cut issue, particularly if limited to a bearing-equipped bit, since the template would need to be thick enough to provide a surface for the bearing to ride against for the entire depth-of-cut range.

The design of the jig, of course, depends on how you prefer to approach the cut, and how often you'll be using the jig.

- Ralph
Ralph Barker is offline  
Sponsored Links
Advertisement
 
post #4 of 16 (permalink) Old 03-01-2011, 12:42 PM Thread Starter
Registered User
 
Join Date: Mar 2011
Country: United States
First Name: Chris
Posts: 8
 
Default

Quote:
Originally Posted by bobj3 View Post
Hi Chris

The jig in the video looks Very unsafe, I would suggest you use a template and the bit below..any time you drop stock on the bit in a floating mode you are asking for it..

you can make a quick template by gluing up some 1/2" thick MDF sticks to make the sq. pocket you need..and use some tape "DSCT" to hold the parts in place.
Note once you have the pocket in place than cut the stock down to size..


====
The Amazon link is for 1/2", which (I don't think) fits the Proxxon's max of 1/8". What are "thick MDF sticks" and "some tape "DSCT""?

Thank you both for the comment of the youtube video. I'll take that to heart and not go that direction. This is the only use I have right now for the router. With more experience, I'll venture out. But, I'm able to make a jig for this specific use and don't plan on moving it on and off very much or at all. Are there pictures of different jigs for similar purposes? I find a picture is a 1,000 words as they say.

Oh, and I need to hurry up and get to 10 posts so I can quote your links.
Advance The Man is offline  
post #5 of 16 (permalink) Old 03-01-2011, 12:46 PM Thread Starter
Registered User
 
Join Date: Mar 2011
Country: United States
First Name: Chris
Posts: 8
 
Default

I'm really a novice, but I promise I learn quick. So the bearing guided router bits will 'glide' along the outside boundaries? Are these made in hobby sized bits? i.e. 1/8" or 3.2 mm?
Advance The Man is offline  
post #6 of 16 (permalink) Old 03-01-2011, 03:33 PM
Forum Contributor
 
Join Date: Jan 2006
Country: United States
First Name: Bj
Posts: 23,786
       
Default

Hi

You may want to use a mates router for this easy job..
DSCT= Double Sided Carpet Tape
MDF = Man made wood that is very flat and easy to use..
Here's some other templates that the bit is use for..

Amazon.com: Milescraft 1213 Complete Door Mortising Kit: Home Improvement

=========

Quote:
Originally Posted by Advance The Man View Post
The Amazon link is for 1/2", which (I don't think) fits the Proxxon's max of 1/8". What are "thick MDF sticks" and "some tape "DSCT""?

Thank you both for the comment of the youtube video. I'll take that to heart and not go that direction. This is the only use I have right now for the router. With more experience, I'll venture out. But, I'm able to make a jig for this specific use and don't plan on moving it on and off very much or at all. Are there pictures of different jigs for similar purposes? I find a picture is a 1,000 words as they say.

Oh, and I need to hurry up and get to 10 posts so I can quote your links.



"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
http://www.routerforums.com/search.php?searchid=944097


bobj3 is offline  
post #7 of 16 (permalink) Old 03-01-2011, 07:25 PM
Registered User
 
Ralph Barker's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Ralph
Posts: 2,001
 
Default

Quote:
Originally Posted by Advance The Man View Post
I'm really a novice, but I promise I learn quick. So the bearing guided router bits will 'glide' along the outside boundaries? Are these made in hobby sized bits? i.e. 1/8" or 3.2 mm?
I've never seen bearings for 1/8"-shaft bits, but they might be out there.

For your "hobby" router, it looks like you'll be limited to using stop blocks or the edge guide to limit the travel of the router base, and thus the area being cut. As long as you have an even surface for the router's base to ride on, you'll be OK. In some instances, for example, you might need to put a thin sheet of MDF (medium-density fiberboard) or tempered hardboard (Masonite) over the work, with a cut-out for the bit to work within.

- Ralph
Ralph Barker is offline  
post #8 of 16 (permalink) Old 03-01-2011, 08:34 PM
Registered User
 
Ralph Barker's Avatar
 
Join Date: Dec 2008
Country: United States
First Name: Ralph
Posts: 2,001
 
Default

Here, as an example, is one approach to a jig for routing out your weight cavities with your Proxxon router.

The rabbets on the edges of the boards hold the workpiece down, and the blocks on top limit the travel of the router base, thus defining the dimensions of the cut-out. This approach assumes that the workpieces are going to be of consistent thickness - e.g. the same dimension as the rabbet.
Attached Thumbnails
Click image for larger version

Name:	hold-down-jig.jpg
Views:	261
Size:	63.5 KB
ID:	41814  


- Ralph
Ralph Barker is offline  
post #9 of 16 (permalink) Old 03-01-2011, 08:54 PM
Forum Contributor
 
Join Date: Jan 2006
Country: United States
First Name: Bj
Posts: 23,786
       
Default

Hi

Yes you can get bearings for a 1/8" router bits from just about any bearing supply outlet..
Some router bits come with them on some round over bits and others they are in place a with Allen screw on the top of the bit...

Note ***if you have a inlay set it will do the job also with a 1/8" shank bit, it that way you don't need any bearings for the bit...but I'm not to sure if your router can take on the brass guides only you know that..

http://www.routerworkshop.com/inlays112.html
http://www.routerworkshop.com/inlay0802.html

http://www.harborfreight.com/solid-b...kit-99552.html

Making a template is easy, see below..

Bearings
MLCS Woodworking Adaptor Bushings and Ball Bearing Guides

Amazon.com: Dremel 692 6-Piece Router Bit Set: Home Improvement
Amazon.com: 10 pc. Mini Router Bits Set (For Dremel Tools): Home Improvement

1/8" lock collars from ACE Hardware.you will need two of them.

======
=======



Attached Thumbnails
Click image for larger version

Name:	pocket template.jpg
Views:	613
Size:	30.3 KB
ID:	41818  

Click image for larger version

Name:	6273.jpg
Views:	176
Size:	24.0 KB
ID:	41821  


"It's fine to disagree with other members as long as you respect their opinions"

Marc Sommerfeld Tools ,Videos
http://www.youtube.com/channel/UCT-n...RWaEpMA/videos

Find all threads started by bobj3
http://www.routerforums.com/search.php?searchid=944097



Last edited by bobj3; 03-01-2011 at 11:43 PM.
bobj3 is offline  
post #10 of 16 (permalink) Old 03-01-2011, 09:00 PM Thread Starter
Registered User
 
Join Date: Mar 2011
Country: United States
First Name: Chris
Posts: 8
 
Default

Thank you both for the picture. I'll draw up a plan and try it.
Advance The Man is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Router Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Forum Suggestion Thread Mark Site Help and Suggestions 131 02-08-2015 10:33 AM
A suggestion from Maurice harrysin Woodturning and Lathes 48 12-08-2013 10:16 AM
A routing tutorial for beginners Part Four harrysin Guide Bushings and Templates 23 04-21-2013 10:31 AM
CNC routing as first routing experience ianthehenry CNC Routing 23 04-25-2012 05:24 AM
JIGS CAN MAKE ROUTING SAFER!! (lesson learned for a newbie) metzgeri Jigs and Fixtures 44 01-25-2011 12:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome