Its too hot in Brisbane today to do any serious wood work so I decided to experiment making mouldings using a table saw (TS)and Spindle Moulder/Shaper (SM/S)
It appears there is two methods of making mouldings using power tools,
Method 1 Using a rounding over bit with a bearing and doing two runs on the timber.
Method 2 Using a full bull nose bit fitted to a table or SM/S (no bearing required) and only one run on the timber.
I had both types of router bits but decided to do the least labour intensive method, Method 2.
Fairly basic setup is required align the timber for a satisfactory depth and positioning on the timber.
The positioning is of least importance as it will be removed by the TS later.
Run the timber through and produce the profile shown.
Go to the TS and set it up with the SM/S beading sample.
Set up the TS so it cuts as close as possible the the bottom edge of the bead. If you can set it to zero feather that is good. Note:
You may get a very fine wood feather remaining, this is OK if you can remove it by simply just rubbing your fingers on it, otherwise more adjustment is needed.
Trying to get to zero feather or more accuracy on my TS and associated setup was not possible.
Add a magnetic guide block on the left of the saw blade.
Return to the SM/S and TS and repeat the process, then back to the saw, do as many times as needed.
As the material gets thiner and thiner accuracy errors will begin to appear, so its time to stop, and or get some more material and continue on.
So there you have it, making small accurate repeatable mouldings is reasonably easy.
In closing the errors produced on the last runs can be cut off so they are not total wastes.
-- Regards Robert