I’ve been away several months from CNC’ing due to work commitments.
I started back this week and downloaded the version 1.5.3 of gSender. Very nice looking it is. On a trial run of a basic job I found the gantry sticking briefly and not starting the carve in the correct place.
I’ve checked and tried different travel speeds from 10 to 4000 and it still jams making a noise. It’s only a second or so before it moves but now the start point is in the wrong place.
I had this problem with the old gSender when I changed to the SLB and found I need to use 2800 in the travel speed. I’ve checked the various nuts and wheels on the X Axis parts and I’m using the self sprung backlash block..
I’m wondering if there’s something in the new gSender I’m missing. I just ordered a new style lead rail locking Hex nut to try out.
Hope you can help. Roy.
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Roy this very much sounds like something might be up with your machine mechanically. The first thing I’d recommend doing is bringing your machine to anywhere that it tends to be getting stuck, then try rotating the lead screw from the end by hand to see if there’s more resistance in that area than in others. If there is the in can point to your rails needing cleaning, over-tightened v-wheels, a burr on the rail, stuff like that. You should always be able to rotate the lead screw with your fingers easily and not feel much resistance
If you are feeling resistance, you might need to try thinks like realigning your anti-backlash nut, ‘breaking in’ your spring loaded nuts since they can sometimes be a little tight when you first receive them, check that your v-wheels, etc.
Basically the summary is that if your machine is even '“jamming and making a noise” this is almost always a mechanical or electrical issue - not related to gSender
Hi Chris.
Thanks for getting back. I’ve already stripped down the X Axis cleaning the backlash block and lead screw. I’ve check the tension in the lead screw by loosening and tightening it. Checked the connector at the motor end and all the V rollers. The jamming is intermittent. Sometimes it goes to the start point but more often it jams. The other issue I’ve noticed is the spindle start up movement. I’ve set the amount of time from 2 seconds to 15 seconds to allow the spindle to build up to required speed but no matter how long the setting is the gantry moves straight away while the spindle is still building up speed.
I’ve got a new T12 locking Hex nut coming the day with what looks like a new style of locking. In my old one the locking screw hole thread had stripped so the screw wasn’t getting tight.
I also double check the stuff you you told me too to be sure I’ve done everything right.
I had a similar problem with the X Axis sticking last year when I bought the new SLB. That was a speed issue which I eventually set to 2800. I have tried that with the new gSender but it didn’t cure the problem.
The spindle spin-up issue I’ve seen a couple places reported now so we’ll definitely get that fixed 
regarding the rest of your setup I think I’d recommend you send us in a ticket so you can get more direct machine support or even phone support to fix your issue.
I don’t think the SLB upgrade should’ve caused such a speed downgrade with your setup and after all the checks you’ve dine having intermittent jamming also sounds very odd to me
Hi Chris. I’ve just received and fitted the new T12 locking nut and made sure I didn’t over or under tight it. I’ve also rechecked the V wheels and ease of finger moving the X lead thread. Still getting the sticking issue. I mention earlier that a had the same issue when I changed over to the SLB. I got very excited that it had higher speeds but after contacting you about the jamming I was advised to lower the speed which I did. It stopped jamming at about 2650. No problems after that. I noticed on the gSender 1.5.3 has different figures in the jogging. I’ve tried a going through a range of setting but just wondered if there is a figure that matches the 2650, May be the new version is a different unit of measurement.