Beefing up a thin spider

[Gerald D]

Various spider plate suppliers have made spiders which are only 3mm [1/8"] thick and these thin spiders are giving flexibility problems. The simplest reinforcement that I can come up with is the following:

2404
The green bars are about 8 x 12mm [5/16 x 1/2"]

Or, even further, add the white:
2405

[vishnu]

Gerald the drawings seem to be good and nicely structured. Should hold the spider firm.

[J.R. Hatcher]

If the guide wheel bolts were extra long and went through the green bars it would be even stronger.

[riesvantwisk]

@all,

I am preparing the sheets and a USB stick for laser cutting my parts.
According to the DXF the spinder plate (10 40 432 ) should be 5mm thick. Yet the XLS document suggested a preferred thickness of 4mm. Which one is right?

Looking at the XLS part 10 30 455 also suggests 4mm, but part 10 20 451/452 suggest 5mm so I couldn't make a decision yet... Reading the above thread suggest 4mm is bare minimum, so best is 5mm steel. Would that be correct and teh XLS is wrong??

Regards,
Ries van Twisk

[domino11]

Ries,
I think the excel sheet did NOT get updated with the last updates to the plans. I would go with the 5mm as called for in the current drawing set. :)

[Gerald D]

5mm is better. I must change the xls sheet.

[riesvantwisk]

Alright,

thanks for the info! Currently I am placing orders for the stepper motors and the gecko drives, gathering more photo's for Jairo so he has a better understanding off the machine. He has no internet and doesn't speak English, so I do a lot of translation for him :)

Ries