As for the crossword, 22.49 which felt a bit slow, with the top half resisting more than the bottom. I wondered if there might be something of a theme with both the triangle word and its most famous exponent, but I think not.
I have done my best to eliminate mistakes and present clues, definitions and SOLUTIONS in my customary style, but if misprings have slipped through, please be kind as you usually are.
Across
1 Projection to get extremely large ratings here (10)
FORECASTLE So projection is FORECAST, to which you add the extreme (letters) of LargE. Your ratings are of course the people shaped navy ones.
6 Stream in gorge to the west (4)
FLOW Gorge here is to eat greedily, or WOLF. “To the west” means you reverse it.
9 Liberal is firm and very devout (7)
COPIOUS Firm is CO(mpany) and very devout PIOUS.
10 Changing ends of meandering route, one wants good fare (7)
GOURMET An anagram (changing), for which you want the letters of ROUTE plus the M and the G from either end of meandering.
12 Date and I loved dancing and were a good match (10)
DOVETAILED And immediately our second anagram (dancing) of DATE and I LOVED.
13 Fighting men cut by a blade (3)
OAR Of the many abbreviations for military personnel, you need OR (Other Ranks). Cut them down the middle with the A in plain sight.
15 When one’s getting on with female penning graffito (6)
DOTAGE The female in question is a deer one, a DOE, and the graffito penned thereby a TAG, one of those almost always illegible stylised signatures defacing public surfaces.
16 Distance Parisian is to roam (8)
ESTRANGE The Parisian version of is is EST, to which you add RANGE for roam. Distance here is a verb, not a noun.
18 Possibly getting a raise in pounds provided by board (8)
LIFTABLE Pounds gives you just the single L, or £, provided is IF and board TABLE.
20 Trims twirling officer’s coat decoratively (6)
STUCCO So it’s to coat decoratively, made up of CUTS for trims, which you twirl or reverse, plus an officer, in this case a CO.
23 Book suppressing final character’s age (3)
ERA The book is EZRA from the OT, from which you remove the final character, in my alphabet the Z.
24 Needle with point around figure’s side (10)
HYPOTENUSE The way I have this is that we have HYPO for needle of the kind they’ve recently jabbed in your arm, then USE is from point as in “what’s the use/point of doing crosswords” surrounding TEN as a random figure.
26 Help when presenting US car line on the radio (7)
AUTOCUE An American car is an AUTO, and QUEUE for line sounds like CUE where heard on the radio.
27 American peak with worse weather (7)
RAINIER A volcano in the Cascades in Washington State. It helped that the weather here has just turned from dry to soaking, so it’s rainier, worse unless welcome for the garden.
28 Herb around old French bread now (4)
EURO The herb is RUE, for remembrance according to Ophelia. It’s around, or reversed, and O(ld) is stuck on the end. Bread, of course, slang for money.
29 Philosopher, on leaving, snakes around market (10)
PYTHAGORAS The snakes are PYTHONS, from which ON leaves. They then circle the AGORA, Greek for market, known to you from agoraphobia. The wordplay kindly prevents you spelling P. with a U at the end.
Down
1 Reality about to get inverted in newspaper (4)
FACT C(irc)A for about gets inverted inside the F(inancial) T(imes).
2 Harmony left following musical style (7)
RAPPORT Left supplies you with PORT to follow RAP which is allegedly a musical style.
3 Work with nothing explicit about ballet, say (13)
CHOREOGRAPHIC Work is CHORE, nothing is 0, and explicit GRAPHIC.
4 Strut surely has wood in for example (6)
SASHAY This confused me, because I thought surely (ay perhaps), was part of the wordplay, but I think it’s part of the definition as marked. So it’s ASH, random wood, surrounded by SAY for for example. Chambers has “to walk or move in a gliding or ostentatious way”: that’ll do.
5 Bar’s words from member with drinks on tab (8)
LEGALESE (Bodily) member is LEG, drinks ALES and your tab(let?) is the E.
7 Bird, catching bit of current, is to take off (7)
LAMPOON The bird is a LOON, and the bit of current it catches is represented by AMP.
8 A new merlot’s drunk – it’s sweet and refreshing (10)
WATERMELON About time we had another anagram (drunk), here of A NEW MERLOT. Oenophiles of this parish can confirm whether Merlot meets that description.
11 Getting this could be seen as infra dig (13)
UNDERSTANDING I’m going to leave the definition as marked, though dig also has similar overtones. I think the wordplay invites us to think of where we would be if infra, under. I’m happy to be further enlightened.
14 Corrupt? Oddly they’re overwhelmed by praise (10)
ADULTERATE Take the odd letters of ThEy’Re and overwhelm them (well, surround them) with ADULATE for praise.
17 Like a shoe, perhaps, that’s unsafe to walk on (8)
SLIPPERY The Uxbridge English Dictionary puts in an appearance. Under slippery, it has “a bit like a shoe”.
19 Large heavier clothes more streamlined (7)
FLATTER Heavier translates to FATTER, which “clothes”, L(arge)
21 One handling money in his care roughly (7)
CASHIER Another anagram (roughly), of HIS CARE.
22 Formality which may come from King Edward (6)
STARCH I believe starch is a major component of the potato, of which King Edward is an example.
25 Most of national flag (4)
IRIS The national you need is IRISH. Lose the last letter.
Unless I’m losing my marbles (not unlikely), the text of 17d used “unsafe to walk on”
Edited at 2021-06-17 03:47 am (UTC)
In most of your examples it’s arguable that ‘auto’ is a prefix, but ‘Auto Trader’ seems clear and now that you mention it you do see the word used a fair amount in the trade (google finds me a business called ‘Majestic Autos’ for example).
It’s not used in everyday conversation (at least not in my experience) but then I don’t know that it is in North America either.
Edited at 2021-06-17 09:09 am (UTC)
Since infra dig. means infra dignitatem, I interpreted the clue as just a literal English translation, under (your) standing. Works for me!
Liked the Uxbridge slippery most of all. Saw infra dig as being below/under the (necessary) standing/rating, close to its dictionary definition, so somewhat Uxbridge-ish as well.
edit: Just repeated what Vinyl said, I see – it takes me 13 minutes or more to read the blog and formulate a comment.
Edited at 2021-06-17 04:05 am (UTC)
The word play didn’t kindly prevent me from putting a ‘U’ into Pythagoras – I hadn’t heard of agora = market but will now try to remember it from your useful reference to agoraphobia. Thanks.
Thanks to setter and blogger
Excellent crossword and I have learnt something: the Rainier peak.
Thanks setter and Z.
Steady solve. Just threw in rainier and understanding. Surely in 4dn seems to be a filler word.
THanks, z, nice blog.
Good stuff. Thanks Z and setter.
Edited at 2021-06-17 10:40 pm (UTC)
SW quadrant gave me the most trouble with slippery, hypotenuse and pythagoras my last entries.
Thanks setter and blogger.
As to the business in hand:-
FOI 2dn RAPPORT
LOI 28ac EURO
COD 25ac ERA
WOD and back to CARDAMOMS – for a substitute powder. grind equal amounts of allspice and cinnamon – apparently. I love ’em green and whole in pinapple chutney!
Edited at 2021-06-17 10:03 am (UTC)
Enjoyed this, and as most, AUTOCUE was my last. All I could see were ARTICLE and ATTACHÉ which blinded me to the answer. Not sure if the US use of auto is needed as US use of line as queue is enough for the cryptic to make sense.
Edited at 2021-06-17 10:46 pm (UTC)
Talking of distance and estrangement; I may be imagining it, but, for some odd reason, the phrase “dead to me” seems to be cropping up more and more frequently in the media. As if we’ve all started reading the same Victorian novel.
Thanks to Z and the setter.
And Pythagoras a philosopher? Well yes all the sources confirm this, but he wasn’t the first one to occur to me.
Why is FLAG IRIS?
It seems to have been cropping up a lot recently in the puzzles I regularly do.
I picked up 23 ac “era” at the first pass but spent not a little time trying to parse it by seeking to identify a novel or book of the bible of 4 letters beginning ERA. PDM moment on returning later and the letter Z appeared in a neural circuit somewhere.
Lots of excellent clues with my COD 28 ac “Euro” where I couldn’t reconcile the number of words for what seemed ages. Of course once I stopped thinking of “pain ” for french bread, another PDM appeared, accompanied by a smile and a groan.
Thanks to z8 for a fine blog in frustrating circumstances and setter for a fun puzzle.
My heart sank when I saw the infra dig clue — I find those long cryptics tough, but a few checkers were helpful even though I didn’t get it, ditto ERA but all correct nonetheless
Nice puzzle — thanks Z8 and setter