Longevity of the dremel knock offs?

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Simon P
Posts: 28
Joined: Wed Mar 12, 2014 9:17 pm
Location: Wiltshire, UK

Longevity of the dremel knock offs?

Post by Simon P » Tue Apr 08, 2014 3:49 pm

I had some free time this morning so decided to make my first cuts on the shapeoko with the dremel knock off that came in the kit. Mine is a UK inventables kit so it came with a 'silverline' 135w variant. The thing didn't even make it out of the gate because the spindle lock button broke while I was tightening the collet. It looks like they sell for less than £15 so not worth making a fuss over and it was duly discarded at the local electronics recycling bin. Luckily I already had a genuine dremel 300 which I have now put into service on the shapeoko.

Moving on I found that the run out on the dremel is bad enough that I deem it unusable - I'm actually better off doing the work by hand :lol: I am seriously considering a D26200 (That's the Dewalt 611) or a Kress because of this but that throws nearly £200 into the CNC money pit once all is said and done.

Aside from lowering my expectations are there any tricks to improving these sorts of cheap rotary tools?

Simon
Shapeoko 2 #3697 - Dewalt D26200 Spindle, Precisebits Collets, 250mm Z-Axis Makerslide

WillAdams
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Re: Longevity of the dremel knock offs?

Post by WillAdams » Tue Apr 08, 2014 3:52 pm

Well, the spindle options page ( http://www.shapeoko.com/wiki/index.php/Spindle_Options ) does link to a forum post : http://www.shapeoko.com/forum/viewtopic ... 466#p12466 which notes:
1.) The knockoff dremel - great starter tool and will take you further than you might expect. These are prone to working great and then dying all of the sudden.
But that first page also has links to:

http://www.instructables.com/id/How-To- ... nd-Dremel/
and
http://www.shapeoko.com/forum/viewtopic ... 481#p22481
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

Simon P
Posts: 28
Joined: Wed Mar 12, 2014 9:17 pm
Location: Wiltshire, UK

Re: Longevity of the dremel knock offs?

Post by Simon P » Mon Apr 14, 2014 3:15 pm

Thanks Will,

I had seen the tip on tightening up the bearings in old dremel type tools while constructing my shapeoko but, since my dremel is new, I hadn't thought it necessary. Today I opened the dremel up and used some of the larger diameter heat shrink that came in the inventables shapeoko2 kit to shim both bearings. The diameter of this heat shrink was almost exactly the diameter of the bearings but I shrunk it on anyway to ensure a snug fit. After putting the dremel back together again the difference is night and day. Run out has been reduced considerably and I'm now in a position to route out some hold down holes and router mounts for my new Dewalt.

Simon
Shapeoko 2 #3697 - Dewalt D26200 Spindle, Precisebits Collets, 250mm Z-Axis Makerslide

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