New Toy.. Lidl variable speed disc sander..

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New Toy.. Lidl variable speed disc sander..

This topic has 9 replies, 4 voices, and was last updated 20 May 2023 at 21:21 by Taf_Pembs.

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2 May 2023 at 19:49 #643654
Taf_Pembs
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@taf_pembs
As the title says, I have bought a variable speed 125mm disc sander from Lidl today, their usual brand – Parkside.

Don't know if anyone else has had any experience of it but thought it was worth a go..

I've been considering making a lower speed lapping disc for sharpening cutting tools, particularly the carbide ones.. then food shopping this morning (the other half has gone and bust her ankle so she's legless and I'm armless!) and saw it. At £34.99 .. I couldn't build one for that and it feels reasonably well made, certainly for the money.

It has a max speed of 4000rpm, I don't know what the minimum speed is but its plenty slow enough for some decent cutting tool finishing (I'll get a tacho on it when I can … maybe).

I've ordered some 100mm (cheaper and more common) diamond lapping discs in a few grits (180 – 2000) so now just have to modify the face plate to mount them.. easy enough.

I'll let you know how it goes
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2 May 2023 at 19:49 #20992
Taf_Pembs
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@taf_pembs
2 May 2023 at 20:28 #643659
Bazyle
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@bazyle
Can you measure the runout and end float of the spindle (not the disc which probably has some wobble).
2 May 2023 at 20:48 #643663
old mart
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@oldmart
It looks good, but I have overspent on Lidl 20V cordless tools in the last week. A cordless strimmer, about 70% as powerful as a mains one, A cordless jet wash, I wanted a less powerful one and this one runs at about 275psi, and a cordless chainsaw, works a treat cutting up 5" diameter trees.
2 May 2023 at 20:58 #643664
Taf_Pembs
Participant
@taf_pembs
Bazyle, yes no probs, when I get round to stripping it to modify.. wont be for a bit yet but will post here..

Old Mart.. That made me chuckle..! Got a wee bit carried away did we?!

I think we all know the law though… he who dies with most toys.. wins!
2 May 2023 at 21:51 #643669
Jim Guthrie
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@jimguthrie82658
I got one a year or two ago, primarily to use for working with small wood sections for model building and it does that very well. I've also used it with small brass and aluminium sections with the sanding discs which came with it and that also worked well. The only complaint I have is that the angular guide and the sliding "T" bar are locked with the one screw. so its not possible to set the guide at a required angle and move it along the table. But there's plenty of meat on the table to make tapped holes for screws to make your own guides, which I have done.

Jim.
2 May 2023 at 21:53 #643670
Bazyle
Participant
@bazyle
thanks. Annoying thing is I went past Lidl today but didn't need food and didn't drop by to see what new toys were in to avoid being tempted by doughnuts.
4 May 2023 at 18:57 #643980
Taf_Pembs
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@taf_pembs
Hi Jim, yes, did notice that but as you say looks pretty easy to modify to allow it to slide, what's there should make a plenty good enough table / guide.

Bazyle – I stripped the thing this evening, seams pretty well made for the money.. strong enough (certainly for what it's intended use is) the board is pretty well soldered etc and if it's any help I can not feel any end float or spindle play at all no matter how I hold it or pry it about.

I haven't put an indicator on it, just stripped while watching the snooze as it was still in the house. When I get it up the workshop I'll get the motor clamped in sommut and measure what is there but if nothing can be felt, it must be pretty small.

I don't know if the way the plate is mounted on the spindle is having any effect of the end float or not, there appears to be a plastic bushing of sort n the back of the plate but I'll let you know when I can.

Cheers..
13 May 2023 at 15:39 #645034
Taf_Pembs
Participant
@taf_pembs
Bazyle, finally got round to taking the thing up the workshop..

Motor stripped out and face plate removed (its on a plastic bushing). motor very gently clamped and with an indicator mounted on the motor body and indicating the shaft end.. I had to check it several times as I didn't believe what I was seeing!!

end float .. 0.01mm!

Side play – and this was probably the flex of me trying to move it – 0.02mm!

I tried several times to measure it in various ways but that was the only movement I could detect.

Hope that helps

Anyway, as the face plate mounts onto a plastic bushing that is fixed to the end of the shaft there is no meat .. well, about 2mm to fix anything to in the centre in order to mount / clamp the diamond discs to so off to the drawing board.

Might be a case of making a new late with a spigot in the centre that can be threaded to take a clamp ring but the cooling fins will be an issue so maybe skim off the thinner outer section and make a new face plate to bond to the hub of this one.. may be better, doesn't need much strength so could be an option. Not going to try to weld a new face plate to it, will warp it to hell with the thickness of this piece. Loctite do some good bonding stuff that should cope with it.
20 May 2023 at 21:21 #646018
Taf_Pembs
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@taf_pembs
While waiting for bits to continue with the mill though I'd have a bash at this face plate..

First job, got hold of a 1 inch long section of 5" ally bar .. just to turn the vast majority of it into chips & noodles!

Then thin down and reduce the dia' of the original face plate just to keep the cooling fin section and turn a pocket in the back of the new face plate..

And leave a wee spigot on the other side as an arbour for the diamond disc centre's..

Then used some loctite retainer to fix the 2 together – not like there is going to be hardly any load on it. Once bonder, mounted it on a temp arbour in the lathe to finish dressing the faces and the mounting arbour, drill and tap the centre M5 and make a corresponding cup to lock the diamond disc's on – though this would be easier for changing and saved having to drill discs for drive dog holes as others have done, I know that looks far better but this will do me fine..

Works a treat, just a notch out of the table for the arbour / retaining cap.

The only down side is the motor spindle has a pretty poor plastic bushing that the face plate mounts to that doesn't fit the best so can wobble ever so slightly.. I'll get round to making something more rigid one day but it seems to work really well.. a successful bit of fiddling I reckon..!

Oh, and a small washer between the 'protractor' and the fence slide means it can be locked but still slide.. bonus!

Edited By Taf_Pembs on 20/05/2023 21:22:30
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