Pegs to stop Honeycomb burnback

Hi Folks.
With my large laser I often find I have issues with burnback from the honeycomb. So I decided to make a little peg that slips into the honeycomb and lifts the work about 3mm off the bed.

I use PLA and with one every 15cm it holds the board off very nicely.

Air is able to flow across the honeycomb between the work enabling a cleaner better cut.

[Here is the Link for the STL]

(https://drive.google.com/file/d/1rL6KhIEPp1GDaKI75lCf13XzBztT4QKc/view?usp=sharing)

Enjoy
Dave

3 Likes

I ended up ditching the honeycomb entirely. I use a steel peg board and magnets to lift the work off the bed. Side bonus is that the magnets hold everything flat and the “peg” holes are precisely an inch apart - making approximate placement easy, and precise repeatable placement using jigs fitted into the holes simple.

Final bonus, a steel pegboard from home depot was cheap ($15), available locally, and less 4mm short of my available work space - so I could use the laser fixed to the spoiler board to cut a cavity for it - ensuring perfect alignment.

2 Likes

Great idea for smaller lasers. My bed is 1300 x 900 and I use full sheets of ply.

1 Like

I didn’t last too long with a honeycomb bed, either. I put a sheet of metal in mine cost me $12 USD. Marked holes with the laser and drilled them. They hold my jigs (5mm sub flooring) and the steel collects lots of the debris and wipes off easier than honeycomb.

:grinning_cat:

Hey David, what is PLA ??

PLA is an inexpensive filiment used in 3D Printers.

OK thanks. I don’t know how I got in the 3D group.

2 Likes

You’re not… he advised he 3dprinted something for raising the material above the table/honeycomb.

:grinning_cat: