Bosch 18V Biscuit Jointer!! Hack!!
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Hello all.
Another hack for the thread here. I've combined a GWS 18V-Li angle grinder and a GUF 4-22 A biscuit jointer to make the latter cordless. Why no one appears to make a cordless biscuit jointer or doweller I've no idea.
My combination works extremely well. Used it to create biscuit joints on some tricky facia recently, part of which was already in situe and would have been a right pain dragging cables round. I've also used it to cut tiles and thin sheet metels using either 105mm multi material blades or worn (105mm diametre or less) metal cutting blades. You get great cuts on these when used with the guide rail.
To fit the front end of the GUF to the GWS, you need to use the flange that comes with the grinder, then get or make a spacer to offset the blade so it will sit inside the biscuit jointer front end. Finally, you use the locking nut from the GUF as this has a slim profile and a 21.5mm raised centre that now centres the blade/disc, something the grinder flange would under normal circumstances, but not this setup.
Here's a video below that hopefully spells out what I've done and shows it in action. Do share your thoughts or ask any questions. I'll be happy to help.
One thought I was having was whether I can apply this same trick to a doweller. Those too seem to be little more than a grinder motor body with a trick front end. If I find one "spares or repair" on eBay I'll give it a go I think.
Oh, and once again, thanks to HIGW65/Bosch_PT_Fan from the German forum for the inspiration.


This post was edited by bailey on 09.04.2018, 17:24 o’clock
Reason: addition and spelling

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Just found out that Makita do make an 18V biscuit jointer they released last year - so mine and Bosch_PT_Fan's versions are not the only cordless ones!
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Farmer
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Bailey, totally agree !
I have owned the Makita SH01W saw for a couple days so far, It cuts 47mm laminated kitchen worktop better than my mains power circular saw, 6x2 joists and sheeting without breaking a sweat. I can not rate this machine enough.
 

This post was edited by jonwalter on 21.04.2018, 12:31 o’clock
Reason: add review

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Hi jonwalter.
Bosch do a very similar 12v saw to the Makita you mention - the GKS 12V-26. They look very handy for quick sheet good tear down.
Worth pointing out, as you mention laminates, the 18V tool hack I've done above is extremely good for laminate and melamine scoring. Works very much like the scoring blades you find on industrial panel/table saws that use very small blades running at high rpm to score the laminates before the main blade cuts the sheet. Using a grinder as I did above means we're getting around 9-10,000rpm. Means we get an extremely clean cut/score in laminates using the biscuit jointer front end and guide rail set up.

 
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great hack fella