Seeking Advice First Router Project - Router Forums
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post #1 of 68 (permalink) Old 01-21-2018, 08:28 PM Thread Starter
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Default Seeking Advice First Router Project

Hi Guys,
Stumbled across this forum when I was looking for some advice on routers seems to be great forum! I was hoping I might be able to get some guidance and advice on some questions I have?

Now Iíll premise my questions by saying that My woodworking skills are very limited (and thatís being kind) so please forgive my questions in advance for the newbieness

Iím looking to build a speaker project that uses two bamboo IKEA bowls joined together to make sphere speakers.

I couldnít include a link as Iím new but they are two bowls 11inches in diameter joined together.

Hereís a pic of one

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The speaker driver cutout is meant to go on the bottom base.

Now my main question is what is the best approach using a router to make a recessed hole so that the speaker is flush mounted in one half (bowl) I could use a hole saw but then I wouldnít be able to have a 4mm recess to make the speaker driver flush.

Iíve bought a jasper jig to make the circular holes but Iím not sure (given itís not a flat surface) how I would go about doing the cut out.

I havenít bought a router yet so any suggestions would be appreciated Iíve looked at a couple of routers that are both plunge and fixed but they are getting up there in price and Iím assuming I would also potentially need a router table as well?

If anyone could offer some advice on how best to approach making a circular rebate/recess that would be really appreciated. Baring in mind this will be my first router project and generally new to woodworker.

Also, any comments on a reasonable price setup that would do the job. I donít want to go too cheap but also would like to keep as cheap as possible given my current skill set!

Any advice would be greatly appreciated


Thanks guys



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post #2 of 68 (permalink) Old 01-21-2018, 08:51 PM
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Hey, Hyped; welcome!
If you fill out your profile the members will know what equipment you have available to you, a first name maybe also?
In any case, if it were me, I think I'd drill out the smaller diameter with a holesaw first, then use that as a template to rout out the slightly larger rebated diameter (the actual recess that the speaker sits flush in).
I'd be a lot more comfortable using a drill press for the smaller diameter hole, with the bowl firmly clamped to the table.
If a guy had a lathe, that'd be another approach.
Having said all that, what you want to do is pretty sophisticated if you've never used a router. For one thing, a handheld router is normally used on a flat surface; you want to do it on a sphere. Not saying it can't be done but I think I'd be using a small trim router to do the rebate.
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post #3 of 68 (permalink) Old 01-21-2018, 09:15 PM
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I would say farm it out to someone that knows what they are doing.
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post #4 of 68 (permalink) Old 01-21-2018, 10:10 PM
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When the cost of the equipment to do this is factored in, I'd say that Theo's advice is best, unless you plan on making a whole bunch of these and selling them, In that case you might want to check costs both ways.
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post #5 of 68 (permalink) Old 01-21-2018, 11:01 PM
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Guys , wouldn’t a router on a circle jig work perfectly for this?

Btw , welcome to the forum N/a . This is an interesting project ,and looks very cool also . Hope you keep us updated. I often wish I built my home theatre speakers instead of just buying them

I donít always insulate , but when I do .
Ok ,I never insulate
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post #6 of 68 (permalink) Old 01-21-2018, 11:02 PM Thread Starter
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Originally Posted by DaninVan View Post
Hey, Hyped; welcome!
If you fill out your profile the members will know what equipment you have available to you, a first name maybe also?
In any case, if it were me, I think I'd drill out the smaller diameter with a holesaw first, then use that as a template to rout out the slightly larger rebated diameter (the actual recess that the speaker sits flush in).
I'd be a lot more comfortable using a drill press for the smaller diameter hole, with the bowl firmly clamped to the table.
If a guy had a lathe, that'd be another approach.
Having said all that, what you want to do is pretty sophisticated if you've never used a router. For one thing, a handheld router is normally used on a flat surface; you want to do it on a sphere. Not saying it can't be done but I think I'd be using a small trim router to do the rebate.


Thanks mate and noted on the profile Iíll updated.

Yeh maybe Iíve bit off more than I can chew if I took the smaller hole out first I was thinking I could build a small box around the bowl where the box is level, flush with the bowl to at least give me a level surface, make sense?


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post #7 of 68 (permalink) Old 01-21-2018, 11:03 PM Thread Starter
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I would say farm it out to someone that knows what they are doing.


Yeh maybe Iím looking to walk before I crawl!


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post #8 of 68 (permalink) Old 01-21-2018, 11:06 PM Thread Starter
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Originally Posted by kklowell View Post
When the cost of the equipment to do this is factored in, I'd say that Theo's advice is best, unless you plan on making a whole bunch of these and selling them, In that case you might want to check costs both ways.


If I can get there with trial and error without killing too many bowls Iím kinda ok with that I guess and Iím hoping to do more stuff in future so donít see investment as a waste if I can reuse the gear.

However as noted above maybe Iíve bitten more than I can chew!


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post #9 of 68 (permalink) Old 01-21-2018, 11:07 PM Thread Starter
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Originally Posted by RainMan 2.0 View Post
Guys , wouldnít a router on a circle jig work perfectly for this?

Btw , welcome to the forum N/a . This is an interesting project ,and looks very cool also . Hope you keep us updated. I often wish I built my home theatre speakers instead of just buying them


Thanks rainman appreciated and depending how I go be sure to post and update


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post #10 of 68 (permalink) Old 01-21-2018, 11:08 PM
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With a perfect circle jig like mine , the main thing would be making sure you find dead centre .
Once you establish that, the jig I have has a 1/8” pin that requires you to drill a 1/8” hole obviously in the bowl .
From there you do the recess first going around the perimeter with the router on the jig till you achieve your depth , then change the circle jigs distance inwards for a smaller diameter hole that copies the diameter of the speakers inner basket where it seats.
This final hole would go right threw, and presto your done

I donít always insulate , but when I do .
Ok ,I never insulate
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