Need help, on Lip - Router Forums
 
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post #1 of 10 (permalink) Old 06-12-2014, 04:50 PM Thread Starter
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Default Need help, on Lip

Hello all I need some help on cutting a lip or rabbet,I have a 5 inch square 3/4 thick board ,I cut a 3-3/8 circle out in the middle of this board for a clock. but I need to rabbet out on the back side to 3-5/8 x 1/2" deep for the clock back to slide in to it but the fron side stays to the 3-3/8 opening,so what I need is a lip I guees you would call it.I have a router table,can this be done on it and how do I go about doing it,which router bit do I need to use

Thanks Bill
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post #2 of 10 (permalink) Old 06-12-2014, 05:38 PM
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From the back side using a rabbet bit, be easier with hand-held router
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post #3 of 10 (permalink) Old 06-12-2014, 07:33 PM
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Originally Posted by Semipro View Post
From the back side using a rabbet bit, be easier with hand-held router
I agree, clamp the work piece and use a hand held router.

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post #4 of 10 (permalink) Old 06-13-2014, 08:20 AM
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Because I don't have any rabbet bits and I believe in the saying "necessity is the mother of invention", I would choose a decent sizes straight bearing bit like the one shown which is 3/4" and replace it's bearing with a smaller one and hey presto we have a rabbet bit! Because your clock to be has so little surface for the router to sit on I would use the ski mounted router as shown, the clock has of course to be firmly held on the bench, my favorite method is to pin pieces of scrap around the work-piece, the last two shots are typical of this method. It's a good idea to build up a selection of bearings, changing one can produce some very interesting variations from what a bit was intended for.
Here in pdf format is a photo-shoot showing how I make these skis.
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File Type: pdf The making of a set of router skis.pdf (1,001.8 KB, 52 views)

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Last edited by harrysin; 06-13-2014 at 08:33 AM.
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post #5 of 10 (permalink) Old 06-13-2014, 03:19 PM Thread Starter
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Quote:
Originally Posted by harrysin View Post
Because I don't have any rabbet bits and I believe in the saying "necessity is the mother of invention", I would choose a decent sizes straight bearing bit like the one shown which is 3/4" and replace it's bearing with a smaller one and hey presto we have a rabbet bit! Because your clock to be has so little surface for the router to sit on I would use the ski mounted router as shown, the clock has of course to be firmly held on the bench, my favorite method is to pin pieces of scrap around the work-piece, the last two shots are typical of this method. It's a good idea to build up a selection of bearings, changing one can produce some very interesting variations from what a bit was intended for.
Here in pdf format is a photo-shoot showing how I make these skis.
Thank you all for your reply's to my issue, and for harrysin, you gave me the best answer to my issue,I have many router bits but I did not have the proper size bearing to use for what I was wanting to do, I never thought of a Straight bit with a smaller bearing to do this with.so I thank you very much and I saved you .pdf file about the skis,I am going to build this ski item,question on using the ski, do you move the router along the rails or do you move the wood??
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post #6 of 10 (permalink) Old 06-13-2014, 07:18 PM Thread Starter
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Thanks all for the info. And for harrysin, your idea seems good, never thoght of using a straight bit.How does the ski work do you move the wood around the bit or do you move the router,I see it moves left and right how about front to back or in a circle?
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post #7 of 10 (permalink) Old 06-13-2014, 11:32 PM
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The router skis are operated from the end cheeks, this give a great deal of mechanical advantage, it gives the operator COMPLETE control of the router. For most operations the router is locked at the centre of the rails but there are occasions like when planing a board that is too wide for the skis to fully cover the surface, in which case the router is slid then locked over to one side then to complete the surface it is slid to the other end and locked. The attached photo. illustrates this.
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post #8 of 10 (permalink) Old 06-14-2014, 12:15 AM Thread Starter
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Hello harry,how do you make the Ski Rods do you have a .pdf on making them?
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post #9 of 10 (permalink) Old 06-14-2014, 12:26 AM
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Hello harry,how do you make the Ski Rods do you have a .pdf on making them?
Here it is! The diameter of the rods must of course match the holes in the router and the thinner they are the shorter they must be in order to prevent sag. Do NOT use Brass, it's too soft, it was the only 3/8" rod that I had at the time.
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File Type: pdf Threading smooth rods for router skis without.pdf (517.8 KB, 29 views)

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post #10 of 10 (permalink) Old 06-14-2014, 12:30 AM Thread Starter
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Thank you Harry, you have made my day with routing,the answers you gave me works great,you have inspired me to use my router more, I like to use the router table a lot making trim of all kinds
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