# For Sale: Phenolic Plenum Board for 48x96 CNC **URL:** \ **Category:** Buy & Sell\ **Created:** [August 12, 2026, 6:10pm UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446 "2026-08-12T18:10:37Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 12, 2026, 6:10pm UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/1 "2026-08-12T18:10:37Z")
For sale: 4’x8’ phenolic plenum board used on my 48x96 Pro. Already has grid cnc’d for four 2’x4’ zones. All-Star CNC grid gasketing in place. Four shower drains installed and sealed ready to accept 2” PVC pipe to your vacuum system (I had it hooked up to a Black Box Hurricane system). Could be sawn in half for two 48x48 Pros. Price: $1200 (which is the material cost alone) Unfortunately, I will not be able to ship this, thus pickup only. Located in the Tulsa, OK area. Why am I selling this…have upgraded to a 60x120 Pro machine. ![image](https://canada1.discourse-cdn.com/flex027/uploads/avidcnc/original/2X/f/fed47ba746e7fbf151010c4a11f46363ac9b4202.jpeg) ---
**Author:** ![bstein2379](https://avatars.discourse-cdn.com/v4/letter/b/2bfe46/32.png) [@bstein2379](https://forum.avidcnc.com/u/bstein2379)\ **Post date:** [August 15, 2026, 3:40am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/2 "2026-08-15T03:40:03Z")
Not interested in your 4x8 phenolic plenum, but curious if you are going to do the same on your 60x120, which is what I have been looking at recently. I can’t seem to find any local Atlanta vendors that can get a 60x120 phenolic sheet. The only online place I found so far is [8020.net](https://8020.net/2808.html)which has up to 60x120 for $43.46/sq-ft (about $2,173.32 + freight). ---
**Author:** ![Kosh](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/kosh/32/3849_2.png) [@Kosh](https://forum.avidcnc.com/u/Kosh)\ **Post date:** [August 16, 2026, 2:39am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/3 "2026-08-16T02:39:10Z")
Ditto on the source inquiry! ---
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 16, 2026, 2:55am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/4 "2026-08-16T02:55:30Z")
On the 60x120, I went with 3/4” King Plastic Goods HDPE. Used a single flute bit to cut the grid. I was able to buy it through Dakota Hardwoods. ---
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 16, 2026, 3:01am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/5 "2026-08-16T03:01:27Z")
Finding phenolic in the 60x120 size was a non-starter from a sourcing standpoint in the Tulsa area. The HDPE sheet I mentioned was readily available in 48x96 sheets, so I bought two, and just epoxied two additional pieces to make up the 60x120 area. Note: it’s recommended to put a 60x120 sheet of mdf under the HDPE plenum board. ---
**Author:** ![avidal](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@avidal](https://forum.avidcnc.com/u/avidal)\ **Post date:** [August 16, 2026, 10:54am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/6 "2026-08-16T10:54:36Z")
no issues with HDPE warping after milling? ---
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 16, 2026, 1:01pm UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/7 "2026-08-16T13:01:51Z")
None at all. ---
**Author:** ![Mr\_C](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@Mr\_C](https://forum.avidcnc.com/u/Mr_C)\ **Post date:** [August 16, 2026, 3:15pm UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/8 "2026-08-16T15:15:09Z")
Did you epoxy the HDPE to the MDF, screws, both? ---
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 16, 2026, 8:12pm UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/9 "2026-08-16T20:12:26Z")
Just a dozen screws. When I setup the g-code in vcarve for the grid, I added a dozen countersunk holes along around the perimeter and a few down the center in between the zones. ---
**Author:** ![avidal](https://avatars.discourse-cdn.com/v4/letter/a/3be4f8/32.png) [@avidal](https://forum.avidcnc.com/u/avidal)\ **Post date:** [August 17, 2026, 10:21am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/10 "2026-08-17T10:21:15Z")
any pictures of new setup? ---
**Author:** ![Rapidfire](https://avatars.discourse-cdn.com/v4/letter/r/e68b1a/32.png) [@Rapidfire](https://forum.avidcnc.com/u/Rapidfire)\ **Post date:** [August 17, 2026, 11:03am UTC](https://forum.avidcnc.com/t/for-sale-phenolic-plenum-board-for-48x96-cnc/6446/11 "2026-08-17T11:03:13Z")
Out of town, but I’ll take a few when I get back to the shop midweek.