Kind of embarrassed showing these pics. Been trying to fine tune my router jig for core profiling but this is my third run at it and sadly it hasn't gotten better.
I think it is time to move away from this plan and do a planner crib. Thing is I have never seen one in person and not to sure how to make one. So I'm just going to toss this out there and let me know if this is the correct way to make one.
My plan is to make one like this.
It looks like how to get the shape of the core is to make a certain size block then trim away at. Starting at 2mm then work my way down to 10-12mm in the middle then back up to 2mm, and doing this for both sides of the planner. Attach the blocks to each side, then putting them together which will give you one flat side and one profile side. Again I'm guessing here so if I'm way off please let me know. One last thing would this work with grip tape and running it on a table saw?
I recently finished router profiler and have no problems. Finish smooth.
From you pictures looks like a router running by itself uncontrollably maybe even a rocking in place.
Don't give up try to find a solution to the problem.
Did you look this video?
btw what speed on the router? Also important direction
I think to solve the problem i need a new router. Thing is, it runs smooth in the holder and on the rails then i look down and see that mess. First time it happened I thought it was the rails so i put extra support on them, then it happened again so i thought it was the core because it did bow a little in the middle so i hot glued it down this time and still that happened. So my thoughts it has to be the router. I got it at a yard sale and I think it was made in the 70s, it has worked great for everything else but for some reason it hates this.
Don't know what to tell you. I can only speak from my personal experience.
I wouldn't buy that. The same hundred dollars you can buy on eBay QUALITY brand 3 hp router. Make sure get one with variable speed or by variable speed controller separately even less pn craigslist
-Your bridge might be too weak and flexing.
-Your router may have too much play so that the whole collet is moving up and down.
-You're putting too much/uneven pressure on your router.
My bridge is pretty beefy but I can still flex it if I put too much pressure on it.
-Your core might be lifting up a bit from the drag/heat of the bit.
Also don't do side to side passes that's how you end up with the steps. Go with the length of the ski = no steps.
sam
You don't even have a legit signature, nothing to reveal who you are and what you do...
If you go with the crib keep in mind it takes multiple passes.
The pics for that crib you are thinking of will make it super heavy. So making a bunch of passes would be a pita.
With your router you can make the crib.
Take some mdf
Router you max depth until your taper starts.
Then take a sanding block and sand the taper in.
Bonus points drill the inserts or core alignment holes in your core before. Drill in a dowell insert to hold onto the core so it wont slip.
I would also say the planer is a much better way to do this. I would be skeptical that your router has any issues. I think it would be obvious if the router had parts moving around (you'd hear lots of bad noises). It's got to be other things flexing in your ribs, core, etc. but, if you have a planer, forget the router.
That crib shown would be ally heavy. We used to have one similar, but with a height block every 5 inches or so. It worked great, but also weighed a ton, and made the whole process a big workout.
The best in my opinion? A cnc'd mdf board to use as a crib. It's light and accurate, but you need one for every profile shape. You can also make two ribs that are the opposite of your profile, then use the router and the same process you're doing now to shape a single mdf board into a crib. You don't have to worry as much about the ratty finish because the core will just bridge the gaps. Cover the whole thing in skateboard grip tape and you're done.
The video showed a hand planer bridge. First time I've seen that.
I've been thinking about switching from router bridge to planer crib.
When I do I'll use my router bridge to make my crib.
Similar to the way I made my reverse camber mold.
I still like the router bridge, simple and so easily adjustable.
sam
You don't even have a legit signature, nothing to reveal who you are and what you do...
