Top 3D Printing subreddits

Largest 3D Printing subreddits

Largest 3D Printing subreddits

#	Subreddit	Members	12-mo growth	Commenters / mo
1	r/3Dprinting	3.45M	+7.8%	29,308
2	F r/functionalprint	631,792	+15%	2,948
3	r/BambuLab	472,777	+54%	15,499
4	r/ender3	256,557	+5.5%	1,180
5	r/FixMyPrint	214,269	+17%	2,100
6	r/resinprinting	134,138	+19%	2,454
7	r/prusa3d	112,498	+19%	2,812
8	r/gridfinity	94,902	+33%	416
9	3 r/3dprinter	83,303	+64%	1,564
10	r/Creality	76,448	+33%	1,366
11	r/ender3v2	53,650	+7.7%	431
12	3 r/3DScanning	52,595	+39%	614
13	r/klippers	52,208	+16%	355
14	r/functionalprints	50,334	+51%	175
15	r/elegoo	48,086	+61%	1,491
16	3 r/3Dprintmything	47,032	+26%	250
17	r/FlashForge	44,615	+60%	1,299
18	r/anycubic	43,831	+19%	501
19	3 r/3dprintingdeals	43,535	+14%	10
20	r/BambuLabA1	43,300	+72%	1,280
21	C r/CR10	41,302	+3.4%	122
22	r/AnycubicPhoton	40,098	+5.7%	187
23	r/VORONDesign	39,635	+22%	585
24	r/ElegooMars	36,628	+7.0%	241
25	r/FDMminiatures	35,923	–	1,332

Fastest growing 3D Printing subreddits

Member growth over 12 months, among subreddits that had at least 18,251 members a year ago.

Fastest growing 3D Printing subreddits

#	Subreddit	12-mo growth	Members gained	Members	Commenters / mo
1	r/BambuLabA1	+72%	+18,175	43,300	1,280
2	r/BambuLab_Community	+66%	+13,843	34,715	610
3	3 r/3dprinter	+64%	+32,446	83,303	1,564
4	r/elegoo	+61%	+18,143	48,086	1,491
5	r/FlashForge	+60%	+16,801	44,615	1,299
6	r/BambuLab	+54%	+165,859	472,777	15,499
7	r/functionalprints	+51%	+16,930	50,334	175
8	r/CommercialPrinting	+42%	+9,407	32,053	1,165
9	3 r/3DScanning	+39%	+14,740	52,595	614
10	r/Creality	+33%	+19,058	76,448	1,366
11	r/gridfinity	+33%	+23,546	94,902	416
12	r/3dPrintsintheShop	+32%	+6,972	28,665	47
13	3 r/3DPrintedTerrain	+27%	+6,300	29,624	229
14	3 r/3Dprintmything	+26%	+9,818	47,032	250
15	r/VORONDesign	+22%	+7,134	39,635	585
16	r/crealityk1	+20%	+3,806	22,474	469
17	r/resinprinting	+19%	+21,858	134,138	2,454
18	r/prusa3d	+19%	+17,887	112,498	2,812
19	r/anycubic	+19%	+6,962	43,831	501
20	r/ElegooSaturn	+19%	+4,589	29,205	541
21	r/cursedbenchies	+18%	+3,507	22,603	75
22	r/FixMyPrint	+17%	+31,351	214,269	2,100
23	r/klippers	+16%	+7,018	52,208	355
24	F r/functionalprint	+15%	+81,603	631,792	2,948
25	3 r/3dprintingdeals	+14%	+5,232	43,535	10

Most members gained

3D Printing subreddits that gained the most members

#	Subreddit	Members gained	12-mo growth	Members	Commenters / mo
1	r/3Dprinting	+248,290	+7.8%	3.45M	29,308
2	r/BambuLab	+165,859	+54%	472,777	15,499
3	F r/functionalprint	+81,603	+15%	631,792	2,948
4	3 r/3dprinter	+32,446	+64%	83,303	1,564
5	r/FixMyPrint	+31,351	+17%	214,269	2,100
6	r/gridfinity	+23,546	+33%	94,902	416
7	r/resinprinting	+21,858	+19%	134,138	2,454
8	r/Creality	+19,058	+33%	76,448	1,366
9	r/BambuLabA1	+18,175	+72%	43,300	1,280
10	r/elegoo	+18,143	+61%	48,086	1,491
11	r/prusa3d	+17,887	+19%	112,498	2,812
12	r/functionalprints	+16,930	+51%	50,334	175
13	r/FlashForge	+16,801	+60%	44,615	1,299
14	3 r/3DScanning	+14,740	+39%	52,595	614
15	r/BambuLab_Community	+13,843	+66%	34,715	610
16	r/ender3	+13,337	+5.5%	256,557	1,180
17	3 r/3Dprintmything	+9,818	+26%	47,032	250
18	r/CommercialPrinting	+9,407	+42%	32,053	1,165
19	r/VORONDesign	+7,134	+22%	39,635	585
20	r/klippers	+7,018	+16%	52,208	355
21	r/3dPrintsintheShop	+6,972	+32%	28,665	47
22	r/anycubic	+6,962	+19%	43,831	501
23	3 r/3DPrintedTerrain	+6,300	+27%	29,624	229
24	3 r/3dprintingdeals	+5,232	+14%	43,535	10
25	r/ElegooSaturn	+4,589	+19%	29,205	541

Most active 3D Printing subreddits

People who comment in a month, the average of the three months ending September 2026.

Most active 3D Printing subreddits

#	Subreddit	Commenters / mo	Posts / mo	Members
1	r/3Dprinting	29,308	7,371	3.45M
2	r/BambuLab	15,499	4,627	472,777
3	F r/functionalprint	2,948	691	631,792
4	r/prusa3d	2,812	808	112,498
5	r/resinprinting	2,454	861	134,138
6	r/3D2A	2,209	975	28,945
7	r/FixMyPrint	2,100	903	214,269
8	3 r/3dprinter	1,564	579	83,303
9	r/elegoo	1,491	574	48,086
10	r/snapmaker	1,374	456	19,314
11	r/Creality	1,366	595	76,448
12	r/FDMminiatures	1,332	431	35,923
13	r/FlashForge	1,299	523	44,615
14	r/BambuLabA1	1,280	392	43,300
15	r/ender3	1,180	302	256,557
16	r/CommercialPrinting	1,165	317	32,053
17	r/ElegooCentauriCarbon	1,084	393	13,935
18	r/makerworld	1,023	671	28,197
19	r/3dprintIndia	876	387	9,517
20	r/SnapmakerU1	803	287	6,807
21	r/BambuP1S	764	222	21,822
22	r/Creality_k2	729	239	11,315
23	r/BambuLabP2S	688	232	12,712
24	3 r/3DScanning	614	284	52,595
25	r/QidiTech3D	612	202	14,127

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How these lists are made

• Members are the member counts measured in October 2026.
• Activity (commenters and posts per month) is the average of the three months ending September 2026. Posts by known bots are not counted.
• 12-month growth compares members now with members a year earlier. A subreddit is ranked by growth only if it already had at least 18,251 members a year ago (the median for subreddits with a known growth), so brand-new communities don't top the list from a base of zero. Subreddits with more monthly active users than 0.808 per member, a sign of inflated activity, are left out of the growth and activity lists.
• NSFW communities are excluded: those Reddit marks as 18+, those where most posts are NSFW, and the Adult Content topic.
• Topics follow Reddit's own community categories.
• The lists are rebuilt every month. Each list shows the top 25 (100 for the largest subreddits overall). Download all lists as CSV (free to reuse under CC BY 4.0, with a link to this page).