No 13883, Monday 05 Jun 2023, Arden

Solution to 24D has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.

Open for anyone to answer, if not solved by 1 PM.

ACROSS

1   Passing a weekend in China, gathered all over the place (6,3,5) MAKING THE GRADE {M{A}{weeK}ING}{GATHERED}* 

10 Rolls over reel (5) SPOOL<=

11 Place to accommodate a say, ISS (9) SATELLITE {S{A}{TELL}ITE}

12 Cross check from East German city (7) POTSDAM {MAD}{STOP}<=

13 Hazy at the borders, a painter finds clear sky (7) HYALINE {HazY}{A}{LINE}

14 Finished getting central clearance for a flying machine (5) DRONE {D{c..aRa..e}ONE}

16 Article, violently racist, it's attention seeking (9) THEATRICS {THE}{RACIST*}

19 Perhaps a main constituent in cheese, it keeps the food warm (4-5) BAIN-MARIE {A+MAIN}* in {BRIE}

20 Ending with a friendly chat, at sea on a boat (5) YACHT {f...lY}{CHAT*}

22 Mortal danger -"getting old," one whimpered (7) GROANED {GR{O}ANED*}

25 Cross, finally get cross (7) ENRAGED {EN{RAGE}D}

27 Some stars dine in plush resort (9) DELPHINUS {DINE+PLUSH}*

28 West perhaps getting in state (5) MAINE {MA{IN}E}

29 A sudden change in membrane potential, operations laid out (14) DEPOLARISATION*

DOWN

2   All the more reason for ratio to vary before one (1,8) A FORTIORI {FOR+RATIO}*{1}

3   Did nothing but place bomb all around - extremely distasteful (5) IDLED {IED}* over {Di...uL}

4   Fuel storage tank - some allowed through gate on the right (9) GASOMETER {GA{SOME}TE}{R}

5   Problem with yank? (5) HITCH [DD]

6   Heroism, everything allowed in a metal frame (9) GALLANTRY {G{ALL}ANTRY}

7   Proof of the presence of an alkali, Bismuth hydroxide (5) ALIBI [T]

8   Openings for stop watches outside... (7) EYELETS {EYE{LET}S}

9   ...therefore inside mobile media device there are small creatures (6) ISOPOD {SO} in {I POD}

15 Half of them are crazy, eating hard cheese (9) EMMENTHAL {thEM}{MENT{H}AL}

17 Cricket team regularly seeks something to eat (9) ELEVENSES {ELEVEN}{SeEkS}

18 Mixing gin and tonic, only in disguise? (9) INCOGNITO {GIN+TONIC}*{O}

19 Win hearts with father's capital (7) BAGHDAD {BAG}{H}{DAD}

21 Cleared the decks as this oddly went kaput (6) TIDIED {ThIs}{DIED}

23 Neat edge of flowering plant (5) OXLIP {OX}{LIP}

24 Money, money raised with interest (5) D?N?R (Addendum - DINAR {RAN{I}D<=} - See comments)

26 Clock up and send (5) REMIT<=

Reference List

Painter = LINE, Old = O, Right = R, Hard = H, Only = O, Hearts = H, Neat = OX, Interest = I