Circle jig for OF1010

cje

Member
Joined
Feb 26, 2010
Messages
127
About a year ago Wim posted how he created a simple and effective trammel unit for his OF1400.
I own an OF1010, that came with a few accessories when I bought it 2nd handed.

I just started to build a toy for my grandson (WIP post will follow later) and need to create some wheels out of laminated beach beech sheets.
Diameter of the wheels is 150mm, so I need to centre real close to the router base.

Just as Wim did, I took the rail guide connector as a starting pont. When you turn that upside down, you'll see 4 'holes', as if one could screw something onto the guide connector.

Guide rail connector upside down, look at the 4 holes, one pair close to each rod connector:
[attachthumb=#]

The diameter of these holes is 3.5mm. They are not drilled through completely, so I drilled one hole through with a 3.2mm drill and cut a thread in the plastic for an M4 bolt.
I started with the 'outer' hole, 'outer' when taking the router base as the starting point. I put the bolt in the hole, protruding a few mm below the connector:
[attachthumb=#]

Now I found out that the smaller circle I needed could only be made by mirroring the setup, and move the guide rail connector to the other side of the base. Furthermore I needed to use the inner 'hole' of the guide rail connector,  so I drilled and cut a thread in that hole as well:
[attachthumb=#]

[attachthumb=#]

For fine tuning I used the micro adjustment accessory. I don't now whether the way I use it is the way it was meant to be used, but I'm happy.

[attachthumb=#]

Loosen the screws that fix the rods to the routerbase, and adjust by turning the wheel. Then tighten the screws on the router base, and do a small test. After a couple of tests  on a piece of MDF the radius was 75 mm exactly. I drilled a 4mm hole in the beech, and in a couple of rotations increasing the depth of the router bit, I had a perfect wheel for the toy.

[attachthumb=#]

(This is a picture of the testrun with MDF, I forgot to make a picture of the result in beech)

7 more to go.

 
Thank you for sharing!

Noticed the first circle you made has a small nik out if. A little slip with the router?

Jmb
 
jmbfestool said:
Thank you for sharing!

Noticed the first circle you made has a small nik out if. A little slip with the router?

Jmb

Thank you!

No, that was the result of testing the fine-tuning mechanism at a radius of 150mm. I just went over the spot several times, until it was 150mm dead on.
If you need to rout a hole (e.g. for a kitchen sink) you start with a lightly too small setup, adjusting outward. Here I was interested in the 'wheel' coming out of the hole, so I started with a slightly to large radius.
 
CJ'60 said:
jmbfestool said:
Thank you for sharing!

Noticed the first circle you made has a small nik out if. A little slip with the router?

Jmb

Thank you!

No, that was the result of testing the fine-tuning mechanism at a radius of 150mm. I just went over the spot several times, until it was 150mm dead on.
If you need to rout a hole (e.g. for a kitchen sink) you start with a lightly too small setup, adjusting outward. Here I was interested in the 'wheel' coming out of the hole, so I started with a slightly to large radius.

Yes i know and I am talking about the wheel NOT the outer bit sorry if I said it wrong.

Jmb
 
jmbfestool said:
Yes i know and I am talking about the wheel NOT the outer bit sorry if I said it wrong.

Jmb

Did you mean this?

[attachthumb=#]

I think that was when I forgot to tighten the screws on the base to secuure the position of the rods. The finetuning has a little play, so tightening the screws on the base is needed.
I tend to try out 'new' techniques (new to me) on some cheap MDF 'waste' before doing the real thing. The first wheel in beech is perfect. Tomorrow I'm going to make the other 7.

 
Back
Top