ER11 or ER16 at 500watts?

Mostly Printed CNC - MPCNC Advice
#1

Hey Everyone.

I was looking at the 500w ER11 on aliexpress when I found out the collete chucks only go up to 7mm for ER11.
For a little bit more I found an ER 16 which has colletes going up to a higher sizes.

Now my question is: Should I bother with higher bit sizes with a power of 500watts?
I would love to very slowly mill aluminum and plywood.

ER11: https://www.aliexpress.com/item/Air-cooled-0-5kw-Air-cooled-spindle-ER11-chuck-CNC-500W-Spindle-Motor-Power-Supply-speed/32341211632.html?ws_ab_test=searchweb0_0,searchweb201602_1_10065_10068_433_434_10136_10137_10138_10060_10062_10141_10056_10140_10055_10054_128_10059_10099_10103_10102_10096_10052_10053_10050_10107_10142_10051_10106_10084_10083_10119_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10122_10123_10120_10124-10050_10120,searchweb201603_2,afswitch_1_afChannel,ppcSwitch_5,single_sort_0_default&btsid=ca208024-fbd8-49a7-86a0-88ccac4ba549&algo_expid=a6b82613-8177-4d9f-a477-3922b68dbf3c-1&algo_pvid=a6b82613-8177-4d9f-a477-3922b68dbf3c

ER16: https://www.aliexpress.com/item/ER16-500W-high-speed-air-cooled-brushless-spindle-motor-engraving-machine-spindle-PCB-spindle-long-life/32735586275.html?ws_ab_test=searchweb0_0,searchweb201602_1_10065_10068_433_434_10136_10137_10138_10060_10062_10141_10056_10140_10055_10054_128_10059_10099_10103_10102_10096_10052_10053_10050_10107_10142_10051_10106_10084_10083_10119_10080_10082_10081_10110_10111_10112_10113_10114_10078_10079_10073_10070_10122_10123_10120_10124,searchweb201603_2,afswitch_1_afChannel,ppcSwitch_5,single_sort_0_default&btsid=ae10522e-e07c-4ffb-a236-a7da7b3b2df4&algo_expid=cd0d7119-ab69-4f4c-b752-f259dd74a23d-8&algo_pvid=cd0d7119-ab69-4f4c-b752-f259dd74a23d

#2

*accidental double post. Edit didn’t show up. Sorry for that.

#3

ER11 is enough… you will go with 1/8 mills most of the time.

#4

Thanks! I will get the ER11 in this case