Keencut Excalibur 5000 - Glass Cutting Conundrum

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Jag62
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Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Jag62 » Wed 25 Nov, 2020 4:16 pm

Hi,

I'm experiencing an issue with my Excalibur 5000. When I cut glass it scores a perfect line until about 6 inches from the bottom then the score becomes quite faint. This almost always results in a perfect break down to the problem area and then a jagged break either to the left or to the right. I can't see any bend in the clamping beam or the back plate. Anyone experienced similar issues & any suggestions how to resolve (hopefully other than chuck it away & start again) ?!

Cheers,

Neil

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Not your average framer » Wed 25 Nov, 2020 5:26 pm

There are adjustable stop screws which set the distance of the glass cutting wheel from the face of the glas andthere are adjustments also for adjusting for excessive play in the sliding carriage of the main sliding rail, as to which one needs adjusting, this may take a little bit of investigation before trying to make any adjustments.

It's probably best to determine what needs to be adjusted, before making any adjustments. So,try and discover what needs adjusting, before going ahead adjusting anything, if you can.
Mark Lacey

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Jag62 » Thu 26 Nov, 2020 9:38 am

Thanks Mark, I've had another go at it this morning & may have solved it. I think the steel edge that sits behind the glass was fractionally distorted, perhaps from glass being previously clamped down against a shard. Now scoring properly but new problem is the bottom edge of the glass is getting nicked. Think this is down to a worn nylon bush which triggers the carriage release.

Thanks,
Neil

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Not your average framer » Thu 26 Nov, 2020 9:51 am

That is possible. Nylon bearings are often subject to wear. Maybe the travel of the glass cutting wheel needs adjucting a little, to ensure adeque contact with the glass at that point. Maybe buying a new glass wheel assembly, might be a good move as well. Unfortunately the difference between perfect glass cutting and problems, is often down to seemingly small things, which are very difficult to see! A spare glass cutting wheel won't go to waste, so perhaps it's worth getting one, just to illiminate the possibility.
Mark Lacey

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by JonathanB » Thu 26 Nov, 2020 9:56 am

Neil - I find with my Excalibur that you do have to concentrate when cutting and make sure you keep an even pressure and ensure that the carriage reaches right to the very bottom each time. I find that if I take my eye off the ball I don't always cut right to the end of the sheet. Sounds strange, but it seems to work.
Jonathan Birch GCF (APF)

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Not your average framer » Thu 26 Nov, 2020 10:10 am

That sounds about right, I had to be fairly careful at the bottom of the cut when I has a Keencut System 4000 and the Excalibur, was the replacement model for the System 4000, so Maybe this tendancy got copied over onto the Excalibur from the System 4000. Lots of machines have their foibles and sometimes you need to learn the knack and after that you're fine, but it's not always obvious at the start.
Mark Lacey

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Richard Photofusion » Thu 26 Nov, 2020 12:49 pm

I'll add that the SteelTrak also requires mindful attention when cutting glass (at least, without the additional glass cutting kit), to avoid an additional curved bit on the LHS.

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by pepper » Thu 26 Nov, 2020 1:14 pm

Keencut have just launched a new website and it has its own forum https://www.keencut.com/support-forums/ probably a good idea to give that a go.

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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Jag62 » Sat 28 Nov, 2020 3:40 pm

Frustratingly the very next piece of glass I cut broke as per all the previous problem pieces. I've spent the whole day trying to sort the problem. Final job was to clean up the cutting wheel and in placing it back into the turret I noticed that it slides all the way into the turret & doesn't automatically seat in the right place - I have to pull it out & clamp in correct position. On checking the Keencut website I noticed that it's different to the glass wheel they list plus they show several other parts (spring, screw, etc) which I don't appear to have. Below is photo of the cutting wheel part I have - does anyone know if this is correct please ?

Regards,

Neil

This is what I have...
glass wheel.jpg
This is what is listed...
KNC-ST-GLASSCUTTER.jpg

Jag62
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Re: Keencut Excalibur 5000 - Glass Cutting Conundrum

Post by Jag62 » Sun 29 Nov, 2020 11:45 am

To answer my own question it looks like I have an early model Excalibur, so glasscutter body appears correct (as the more recent body wouldn't fit). I've tried the new helpcentre on Keencut website but no info there. Please can anyone advise how I contact Oliver at Keencut (who's been mentioned on several other threads) ?

Many thanks,

Neil

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