# Best place for Variable frequency Drive Box for spindle

**URL:** <https://forums.maslowcnc.com/t/best-place-for-variable-frequency-drive-box-for-spindle/5263>\
**Category:** Hardware\
**Created:** [July 29, 2018, 6:55pm UTC](https://forums.maslowcnc.com/t/best-place-for-variable-frequency-drive-box-for-spindle/5263 "2018-07-29T18:55:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![34by151](https://avatars.discourse-cdn.com/v4/letter/3/dfb087/32.png) [@34by151](https://forums.maslowcnc.com/u/34by151)\
**Post date:** [July 29, 2018, 7:55pm UTC](https://forums.maslowcnc.com/t/best-place-for-variable-frequency-drive-box-for-spindle/5263/2 "2018-07-29T19:55:56Z")

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Yes if you want to vary the speed you need a VFD but the sames goes for a router as well

Spindles come in different diameters so you need a mount like the one in your pic to suit.  
The mount bolts to a z axis which will bolt to your sled

All of the above can be purchased cheap on ebay  
Something like this

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>
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A good example is here

> [@My take on a Sled with No Bricks and Using a Spindle (Lots of Pictures)](https://forums.maslowcnc.com/t/my-take-on-a-sled-with-no-bricks-and-using-a-spindle-lots-of-pictures/930):
>
> Firstly I would like to thank all the people on this forum for the immense amount of detailed information being discussed, without which I could never have designed and made this Sled, this post is some part of repaying all the help. I started designing things some weeks ago after getting an update from Maslow that the second batch of kits were nearing readiness wink. I looked at routers available in the U.K. and like many did not find much which appealed. Somebody on the forums mentioned bru…

Im building a sled with a 1.5kw spindle but I dont need that much power for a maslow. Its just that I had one spare. If I was geeting another I would have got one in the 0.5 to 0.8kw range.

While you cant directly compare the power rating of a router and a spindle a very rough guide is spindle power  
x 2 or 3 = router power.

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