best material for the bed to cover honeycomb

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Jason Wright
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Location: Oxford, UK
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Re: best material for the bed to cover honeycomb

Postby Jason Wright » Thu Dec 22, 2016 10:47 am

i hop it will be ok using steel as i have just bought a 3mm sheet for my bed
Chinese 700x500 80 watt machine - TR
Mods: custom air assist off a workshop compressor, ammeter installed, switch panel, overnight internal tube heater

RD works V8.01.18 windows 10

Jason

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Gene Uselman
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Joined: Thu Jul 07, 2016 1:18 pm
Location: Suburban Minneapolis, Minnesota, US

Re: best material for the bed to cover honeycomb

Postby Gene Uselman » Thu Dec 22, 2016 11:22 am

Hi Don- I have not made the alum pinbed, I got tangled up in the Bodor laser [which has a flat stainless table and I have been using my perforated steel pinbed with] and a new [to me] car that I had to setup for an extended roadtrip [we are in San Deigo now]. The alum pinbed will be for my 3x4' laser, which has a blade bed. The steel actually works well and is a lot easier [but only 1x2']. I may end up with two of those [oldish and lazyish]. :twisted:
Gene- 130W 1300x900 China Laser with 2" FL lens
V8.01.19 RDWorks on Win 7 pro
500mm Z, blade table machine home is upper right.

100W Reci tube in a Bodor BCL0605MU V8.01.19
600x500x 200Z, SS table, 2" FL- mach home upper right
Vectric Aspire software- FlexiSignPro- vector/bitmap

Don Flynn
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Joined: Sun Nov 20, 2016 9:33 am
Location: Chicago, IL

Re: best material for the bed to cover honeycomb

Postby Don Flynn » Thu Dec 22, 2016 11:41 am

Prior to the modular acrylic bed like Russ"s I had a rolled steel bed with pins I ordered from amazon or McMaster Carr. The issue I had was keeping things flat on it and I got a strange pattern on the bottom of my cuts that was the same as the pattern of the steel even though it was far away. I was curious about the aluminum because I recently bought a Shopbot CNC and maybe fabricate one. Thanks for your input.
Chinese Laser 60 Watts. Bed Size 500mm X 300mm Home Position:TL.
RDWorks v8.01.18 on Windows 10

Don

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Gene Uselman
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Location: Suburban Minneapolis, Minnesota, US

Re: best material for the bed to cover honeycomb

Postby Gene Uselman » Thu Dec 22, 2016 12:39 pm

I had problems getting it flat too- made an angle iron frame to solve that. I have not seen the reflection issue, I use 2" rollpins from Fastenal and even with the 130watts it seems fine. I first tried .0625 steel and then went to .125 which worked better. My big laser cabinet draws from the bottom so I need as much open downward as possible. Gene
Gene- 130W 1300x900 China Laser with 2" FL lens
V8.01.19 RDWorks on Win 7 pro
500mm Z, blade table machine home is upper right.

100W Reci tube in a Bodor BCL0605MU V8.01.19
600x500x 200Z, SS table, 2" FL- mach home upper right
Vectric Aspire software- FlexiSignPro- vector/bitmap

Martín Lázaro
Posts: 66
Joined: Mon Aug 01, 2016 8:32 am
Location: Olavarria / Argentina

Re: best material for the bed to cover honeycomb

Postby Martín Lázaro » Mon Dec 26, 2016 4:02 am

Hi Jason. i do my cuts with a pop rivets inserted in the holes of honeycomb bed
I found the correct rivets testing different diameters to fit in the honeycomb holes
This rivets have a lenght of 2 inches and allow me enough distance to avoid reflections from honeycomb
The other advantage is that the fume extraction from below continue working because i dont block the honeycomb holes
Here this rivets are not perfectly equal then i need adjust height if it is neccesary. Jus t 1 mm or 2
Martín.-
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2 fixed head (80w+50w). 1300x600mm, TL
RDWORKS 8.01.21 with a new controller rdc6442S + wireless panel
Martín
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Brian Book
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Joined: Sat Dec 03, 2016 8:59 am
Location: Burlington, Ontario Canada

Re: best material for the bed to cover honeycomb

Postby Brian Book » Mon Dec 26, 2016 7:01 am

Hi Martin ... I like your suggestion and will certainly give that a try ... I like the fact that you can place them where ever you need to and still have the full extraction.

Thank You

Brian
On Order = Ray Fine 80w 6040 110v
RDWorks 8.01.18
Corel Draw 6

Brian

Jason Wright
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Joined: Fri Nov 04, 2016 12:57 am
Location: Oxford, UK
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Re: best material for the bed to cover honeycomb

Postby Jason Wright » Mon Dec 26, 2016 7:16 am

Not sure that will work for me as i think its my honeycomb that has a dip in the middle
Chinese 700x500 80 watt machine - TR
Mods: custom air assist off a workshop compressor, ammeter installed, switch panel, overnight internal tube heater

RD works V8.01.18 windows 10

Jason

Doug Fisher
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Joined: Sat Aug 20, 2016 10:42 am
Location: Atlanta, Georgia, USA

Re: best material for the bed to cover honeycomb

Postby Doug Fisher » Mon Dec 26, 2016 10:55 pm

Jason -

As I noted in my write-up about removing and cleaning the honeycomb table on these machines, you can often correct the dip in the middle by shimming along the steel bar that is part of the subframe below the honeycomb mesh. It may not cure all of your flexing issues but it will solve most and minimize the rest.
80 Watt 700mm x 500mm Ke Hui KH-7050 Laser (Similar to the Red Sail),T.R.
LaSea/EFR F2 Series laser tube, RuiDa RDC6442G EC controller, 2" lens, RDWorks v8.01.18, CW 5000 chiller, Chuck type of rotary attachment
Doug


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