Thread: How do I do it.......?

Landeska,

May I first say that you have the most disconcerting avatar on this board. I wish you'd find something more appropriate. :eek:

The way to achieve your goal is to make a jig. (we do a lot of jiging on here)

What you need to do is get a piece of thin scrap ply or MDF about the length of the radious of the circle that you want to make.

You screw one end of this to your router's base.

On the other end you make a pivot at the centre of your circle.

Then you get a straight cutting bit and over several passes plunge it until you are at the required depth.

Hope that made sense

An 80mm hole is small enough for the router to still be very stable without tipping when gouging out the center of the circle.
Its when the dia of the hole gets bigger than the router base you'll have trouble gouging out.

Sorry,

I just re-read your post. My method won't help you at all for an 80mm cutout. For that size you need to construct a template.
There is a lot of info on templates on this board. A search will turn it up.

Craig

Landseka,
if I was doing it, I would carefully mark out my circle on the shopping board and then route out the centre of the circle freehand, being careful to not get too close to the edges of your circle, maybe staying 3 to 5 cm from the edge. I would then mount my template, reset my cutter depth to allow for the thickness of the template and do the edge. Be careful that you dont rock the router on the template.

Jon

Hi Jon
It is an 80mm dia hole. If she starts 5cm (50mm) in from the edge she will be almost at the far side to start off with.

whoops, teach me to not read more closely

Jon

Further to my first post, I have been out today and actually measured the circle that I need to cut..........it is in reality 160mm, not 80mm as I had guessed yesterday.

So....

Originally Posted by Jon

Landseka,
if I was doing it, I would carefully mark out my circle on the shopping board and then route out the centre of the circle freehand, being careful to not get too close to the edges of your circle, maybe staying 3 to 5 cm from the edge.
Jon

This seems to be a good option Jon, my main concern is the freehanding of the middle waste....is there a knack to this? Anything to watch for so the bit doesn't bite and kick back?

craigb

May I first say that you have the most disconcerting avatar on this board. I wish you'd find something more appropriate. :eek:

I am sorry about the distraction Craigb, perhaps I should find something better, I'll check my portfolio later.

Originally Posted by Landseka

craigb
I am sorry about the distraction Craigb, perhaps I should find something better, I'll check my portfolio later.

It certainly distracted Bob Willson - he thought you were a girl. There's nothing wrong with a pci of Keira - I say keep it.

Yeah, sorry about that Neil. I didn't notice your sig until it was pointed out to me by simon c

I personally would turn it but if you have no lathe here goes.

I would use the template supplied with the router to do this.

Make a template from ply allowing for the width of cut from template.

Make a semi circle that fits into the jig and rout out half using the cutout bit to support the router. It doesnot matter if the centre is a fraction deeper than the outer. Preferable in fact to ensure tile sits flat.

Make slightly thicker semi circle, depth of cut plus jig thickness and do other half.

Do not throw these away as you will use them again. 99% of all tiles are this size.

Try on scrap 1st. to get sizes right and clamp the sucker down as it can move rather rapidly when grabbed by a router.

Still easier turning them

Hope this helps.

PS: who is Keira?

To use your router to rebate in a ceramic tile you have several options.
You will need an extended sub base to fit to the base of the router so the cutter will remain at 90 deg to the timber being routed, in other words the router will not tilt into the cavity you are routing and will be nice and stable.
Now you can either free hand the recess to the appropriate depth or do the following.
Using 9 or 12 mm mdf cut a template to the exact size of the tiles diameter. Fix this to your timber with double sided tape or hot melt glue exactly where you want the recess. Using a pattern following bit(bearing on the shank) set the plunge depth on the router and remove the waste. Your template must be as perfect as possible.
If you dont have a pattern following bit then use a template following guide and a cutter of the appropriate size(check out the forum archives for this technique).
Good luck and have fun

Originally Posted by

PS: who is Keira?

Behold!

MMMMMMMMM................... Keira

Originally Posted by Tankstand

Behold!

MMMMMMMMM................... Keira

Ta.