I am just thinking a head.
I have a 1/2" router bit, I currently use it on a router table, hand fed. I am unable to find 1/4" shaft version.
Is there a router with a collet that can take a 1/2inch bit that I can use on a LR4?
There are 1/4" to 1/2" adapters, though you will lose some of your working height and risk increasing the runout. Here is one.
A spindle motor with ER20 collet perhaps? Do not know if it would not be to big for that machine.
They are not too heavy, but I don’t know if the LR4 will handle an 80mm spindle. I couldn’t find a 65mm spindle with an ER20 collet. And the spindle plus VFD is going to run $300+ USD.
65mm is the one i believe its recomended, 80mm spindles are more heavy (and will introduce sone issues as it center is further away from the core)
1/2" shank bits wont go inside er11/16 collets
Thanks, i thought there might be an option like that.
The bit I would like to use probably needs 15mm of Z movement on an item that is 40mm tall. The adapter you found seems to need 70mm of additional height so I don’t think that would be possible. There looks like there would be quite a lot of mass at the end of a thin shaft, spinning quickly with a lateral force… scary for me…
I think I have found a 1/4 inch shaft version on Aliexpress, I may give it a go.
I am curious, has anyone ever fitted a non 65mm diam router to a LR4?
Ryan suggests the upper limit of tool diameter is 69mm in the docs. Plenty of people have mounted spindles within that constraint. 80mm spindle is a no go.
But I’m not sure why you’re trying to buy the tool to fit the bit - surely just buy a different bit? The geometry you need for CNC is much different of that for typical hand fed routing. I tried using a “normal” router bit while I waited for my proper bits to arrive. It didn’t work well.
It also sounds likely that you’re intending on using a bit with a larger than recommended cutting diameter. 1/8" is generally recommended, although some people prefer 6mm.
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The weight and additional offset of the 80mm spindle will get you more troubles than benefits in the lr4.
Get a 800w-1.5kw 65mm aircooled spindle and use the existing 65mm mounts with a good rs485 capable vfd they run for les than 200 (800w)Verkauf Luftkühlung Spindelmotor Kit 0,8 kW 800 W Spindel 24000 U/min + VFD-Wechselrichter mit RS485 + 65 mm Claamp + ER11 für CNC-Fräsen - AliExpress 202216001
I paid 165 for each in november